CONTAGIOUS DIStAStLS. ftBTC They Are Conveyed From the Slrk tt l'rron nt Itlstnnee. Jt is sometimes quite difficult to de termine the extent to which the com jnunicntinjr pnrticlo can In? carried. I; is probable that the nir from a small pox hospital has given the disease to persons a mile distant. On the contra- - fy, twin iwfc ivtvi ti.is ivvu uivuf;ui 1UIU ) the ward of a full but well-aired hos pital and continued mere a day with out a sintrie person cuairaeiinp ine disease. If we could besure as to the secretions and all the skin separations from scarlet fever it would not bo a very communicable disease; yet we have known a dress folded up nt the bed of a dying: patient and placed in a trunk, to convey the poison to a farai- jv oi cmiureu lour uiiicj uisvnnt, wnea the dress was unfolded in their pres ence three months afterward. Whooping-cough and diphtneria are proba bly never conveyed by the first case occurring, except by the breath or sputa of the patient. Measles, on the other hand, are communicated at much greater distances. In general, any one of this clas of diseases having become -epidemic, the communication to others lis frra houses and clothing far more than from persons. Difficult as it is to determine accurately all the facts as to the conveyance of those diseases, their transmissibihty. their times of Incep tion and the time of greatest risk of contagion, or when the patient ceases to be a risk to others, no subject is of more vital importance to communities. Dr. Vacher, the medical officer of Birkenhead, and Dr. Dukes, of Rugby, have given much attention to the sub ject and have classified a large number of cases as to the time from the first symptom to the beginning of eruption, the time from beginning of eruption to cessation of fever, and the time from beginning of eruption to when the pa tient ceases to be infective. They state the latter as follows: For small pox, ltd days; measles, 27 days; scarlet fever, 49 days; diphtheria, 28 days; mumps, 21 days; typhoid fever, 23 ;f days. e will serve as general eruides. Tn nil cases where schools are con cerned the time of return should be guarded. It is to be remembered that more depends upon the cleanliness of the house and family and upon the garments worn than upon the person. It is often a question how far boards of health shall require reports of con tagious diseases. In any good system of sanitary government such report is required as to small-pox, scarlet fever, diphtheria, typhus fever, cholera, and as to measles when extensively epi demic. We think strict rules should be enforced upon physicians as to such report, but that they should be paid therefor, inasmuch as such report is of special service, quite different from .the certification of a death. The hab its of different countries and States differ much, but all agree that the re port should be made by some one. This Is rendered more essential by re cent facts, which show that by early and strict isolation the common com municable diseases are often prevented from becoming epidemic. It is often a question how far attend ance nt funerals should be prevented in cases of den' li from communicable diseases. We know of a recent case in which the attendance of children at a church funeral, the death having been caused by malignant diphtheria, prob ably led to a dozen deaths and many cases in a sparse country village. The exposure is far greater for children than for adults. If all details as to tha washing of the dead body, the dealing with clothing, the time of transfer to the coffin, the use of disinfectants, could be carefully regulated, it is probable that tho risk would be very little; but as wo can not rely upon the carrying out of all these details, it is hotter to prohibit public funerals, and to announce cause of death in all cases of the more dangerous communicable diseases. Similar caution is needed as to the visit j of frionds upon those who are thus sick. While there is no noed oi such fear as will preclude assistance from cider persons where thore is need of help, there is no excuso for ex posing tho young. With duo precau tion as to airing garments, it is vory rare that communicable diseases are carried to others by tho casual visitor. We thus desire to caution all against unnecessary exposure, and to securo public opinion as an aid in preventing the spread of a class of diseases which counts so many victims. A'. Y. Inde pendent. Auto-Inoculation of BoHs, Those who are over troubled with boils know as Job did, that it is com mon to have a crop of boils. This is doubtless duo to Impurities circulating in the blood; it is also supposed that it is possible to get a crop of boils from ono by what is called auto-inoculation. Which means that tho dis charge from ono boil if carried by lingers or dressings tt a healthy por tion of tho skin, may plant tho seeds of another one. To avoid this auto inoculation it is well to uso tho precau tion of antisopsis, or in short to disin fect the emanations from tho boll by frequent applications, both before and after it opens, of a solution of boric acid and absoluto alcohol. This affords a protty short means of preventing a repetition or increase of bolls by auto Inoculation, and where thoro is ten dency to recurrenco in spite of such precaution, thorough constitutional treatment for tho blood Is certainly advisable. Dr. Foote's Health Monthly. Tha Inn of Damo Isaturo Is Damo probably loontod in tho Pyrenees- SCIENCE AM) m;UE$$. REMARKABLE SALT BED IN SOUTH WESTERN LOUISIANA. A Snow Melting Machine That Dlpne of the Snow In the lloatli Where It rll Dimension of Animalcules Fonntl In Stagnant Water. A method is described in Th Scientific American which has proven useful in giving students of the microscope ome adequate idsa of the dimensions of animalcules found In stagnant water. HO. 1 DRAWISO THE TVT3E. A drop of npparvntly clear water placed on a glass slide and put under the objee tive, will cause wonder and astonishment when tlw multitude of anitnalcular life an.1 brought to view. There they are, swimming, twisting, standing, but how large are tbeyl Don't know, because there is nothing to com pare them with. Take a piece of soft glass tubing and soften it in the flame of a gas or alcohol lamp, and then draw it out into a very fine thread, which will be a capillary tube (see Fig. 1). That it is a tube may l proved by inserting one end in water and blowing into the other end, when minuta bubbles will rise. B rtfu 2 FILUXO THE 7CBE EXUAUOED ANI MALCULES. Now insert this tuba in a cup of stagnant water, and the water will readily enter it, rising, perhaps, several inches above the sur face of the water in the cup (A in Kig. S. Hold the tuls (B) liefore you. No larger than a hair of your bead and the bore much smaller. Is it possible there arc livitig creat nrvs in that small space? Place the tulw under the microscope, and lo' many a curious creature disporting itself in as much space as a man would have in a wide street of a city (C in Fig. 2i. These have been seen where it would take at least a score of them placed end to end to make a chain long enough to reach across tho space in the tule. How large are they! Hold up the glass thread before j'our eyes and consider. It is small, the bore is smaller and they are twenty, perliaps fifty, times smaller still. Yet each is a perfect creature, with organ ized structure, and organs adapted for vari ous functions. How large is one's mouth, foot, heel Where is the limit! TU said that all the larger fleas have lesser fleas to bite 'em. And these in turn have smaller fleas, and so ad Infinitum : Snow Meltlnc Apparatus. A system of snow melting has been devised by llr. F. Lvon, London. When it is con sidered that a fall of snow 0 inches dwp, over one mile of road CO feet wide, amounts to 5,800 cubic yards, the impossibility tf remov ing it prompt by horses and carts is at once apparent the more so when it is remembered that some metropolitan vestries have from 50 to 100 miles of road, and thus would have to deal with from 500,000 to f.00,000 cubic yards of snow, assuming a i inch fall to occur. The principle of Mr. Lyon's invention, according to Scientific American, is that the snow can bo dealt with in the roads on which it falls, when it is in a light and fleecy condition, and therefore easily melted. The apjKiratus consists of a wrought iron tube about 35 feet long, having a furnace nt one end and a short length of vertical pipe for a chimney at the other. The tube is made in lengths of G feet, and each length is tapered so that they all fit into each other and are closely packed for transport on wheels. When n fall of snow occurs tho ap paratus is to be laid along the gutters of the roads to 1k cleared, tho width occupied boing about 4 feet. A fire is then to bo lighted in tho furnace, the heat from which will pats along tho horizontal tube, which has a flatly arched top. The snow i then to le shoveled on to the heated tube, which will melt it, the resulting water flowing away to the nearest gully. A trial of this apparatus took place m tho St. Marleylxmo district in February, 1SS.), on some snow which had fnlleu long previously and had been twice cartod. Not withstanding the solidified condition of the snow and the imperfect condition of the ex jxjrime'ital apparatus, it is stated that 21 yards of the consolidated snow, weighing 10 tons S cwt. :i qrs., and equal to 1S yards of freshly fallen snow, were meltod in ten hours with a consumption of coke of the value of Is. Td., or under l-4d. per ton. A ltemnrknble Salt Hed. One of the mot remarkable saltleds in tho world, says American Naturalist, is located on the isle of Petit Anse, southwestern Lou isiana, 125 miles due west from New Orleans. Tho deposit is pure crystal salt. So far as it has been traced there nre 150 acros of un known depth explored HO feet down. Tho surface of the U-d undulates from ono foot above to six feet Iwlow tide level. Hy analyses the salt is 90.8$ per cent pure. The position of the satt shows it to be older than the coal and sandstono which lie abovu It. Scale in n Steam ISollcr. The very Ixt way to prevent scales in n steam lioiler, says one who lias tried it, is to us a feed water heater that will deposit tho scale by raising tho temperature of tho water in tba heater high enough to liberate the soluble matter iwfore the water gets into the boiler. Nobody over heard of "bagged sheets" on a heator. Wo see one every day on boilers. Don't let the srnlo in and it won't trouble you. Drilling Hale In C.lii Plate. An experimenter tells of his successful ex perience in -.'rilling holes three-sixteenths of an inch indiamoter through glass plates about one-eighth of an inch thick, by tho uso of an ordinary bow drill, with spirits of turpentine as lubricant. Tho holes wero drilled from one side until tho point of tho drill just punc tured the opposite sido of tho glass; then tha glass was turned over and the holes finished by drilling from tho opposite, side. Duplex 1'rlnclple In Telegraphy, Tho duplex principle has been successfully adapted to tho Phelps system of Inductive telegraphy, so that messages may bo wilt to and from moving trains In tho ordinary manner without interfering with tho trans mission of message by Indunctlon. With this improvement, a single lino Is all that tt required for both train and ordinary teleg-rophy. M U3 TIMES HAD CHANGED. 4. Orlef Readme by the Sa-SJore Seree Year Aitrr MarrUc. ilr. and Mrs. Jenkins went down to the sen-shore the other day for on of the quiet, happy time? they usei to hare six or seven years ago. before they wen? wed. They took with them this time a vel um of Tennyson and three litth Jenk ins's. "The children can play on the sand while we lie on the soft, preen grass and you read Tennyson to me." said Mrs, Jenkins in dreamy anticipation. Qoeen Galnerere had fled the coast" bepan Jenkins, when they had reached the "soft, preen grass." "Tommy, pet out of that water! What do you mean wadinp in so far? There In the holy home at Almeibnry "lTiWw7 If I speak to you apain. younp man, you'll stop pourinp sand down your little sister s back! For hither had she fled, her cause of Ulcht "Bessie, you and Tommy stop splashing- water on each other stop at this instant: For toss It rhaaced oaf mora, ha all the court "hlllic, what on earth are youdoln? with your hands full of that nasty sea weed? "There, Tommy. 1 told you you'd let that stone fall on your toes If you'd tried to lift such a bip one. Now you mind me next time! But -srl-en Sir Lancelot sold this matter to tao Queen, at Hrt ne "Where nre those children? You ho'.d the book, and I'll po see. There's Willie wadinp in the water up to his waist apain. and Hes-deV sitting flat in the wet Mind in her white dre-.. Tommy's drowned like eaonph. I puess we won't read any more poetry to-day. You, Tommy 7'ewu. where cr- you?" Zenas Dane, in Time. V i DISTILLING LIQUORS. ' ' A Trncon Which l' It Primitive Form Is Known to All s.ra;f. Primitive methods of distillation may be found existinp in nearly all savape nations. It is probable that some method of distillitip liquors ex isted in the time of Homer; but the stronp alcoholic liquors of the present day are a comparatively modern in vention. The discovery of alcohol is penerally credited to an Arabian phy sician. Albus Kasem. who lived in the eleventh century. A monk named Marcus, however, a. early as the time of Clevi-. collected tho steura from the heated spirit of white wine on wool and squeezed out of the wool a balsam, which is described by writers of the day to have been capnblo of brinpinp the dying back to life. Savonarola wrote a treat ise on the water-of-life in the fifteenth century which pave a start to the art of brandy-making in France, In 1494 distilled liquors had become 'such a curse to England that laws were made prohibitir.p their use. In 1761 spirit ous liquors were used to s.uch an alarm ing extent in Sweden that Emanuel Swedenborg presented several meas ures to the Diet to diminish tho num ber of drunkards. The Diet finally adopted his proposition to limit tho distillation of whisky by farming out the right to distill it to the highest bid der, "that is," he adds after making this suggestion, "if tho consumption of whisky can not bo done away with altogether, which would be much more desirable for the country's welfare and morality than all the income that could bo realized by so pernicious a drink." .V. 3'. Tribune. HIGHT OF WAVES. How IIIk'i Thry Uato Hern Actually Known to KUc hi Storm. The story of waves that run mount ain high is a very great exaggeration. Many important measurements have been made, all of which show thnt tho common estimate of the height of waves is due to imagination and fear. The measurements of Scoresby, which are regarded as very accurate, proved that during storms waves in the At lantic rarely exceed forty-three feet from hollow to crest, the distance be tween the crests being AGO feet, and their speed thirty-two and one-half miles an hour. Moivj recent observa tions taken in tho Atlantic (fives from forty-four to forty-eight as the high est measured waves; but such heights are nuely reached, and, indeed, waves exceeding thirty foot are very seldom encountered. The monsoon waves at Kurrachee breakwater works wero found to dash over the wall to thu depth of thirteen feet, or nbout forty feet rtbovo tho mean sea level. Tho greatest hoight of waves on the Hritish coast wero those observed in Wick bay so famous for the exceptionally heavy seas which roll Into It being thirty-soven and one-half to forty fect. Green seas to tho depth of twenty-five fect poured over tho parupot of tho breakwater at intervals of from soven to ton minutes, oach wave, it is esti mated, bolng a mass of forty thousand tons of water, and this continually for three days aud nights. During severo storms the waves used to rido high nbovo tho top of Smenton Eddystono towor, while at tho lloll Hock tho seas, with easterly storms, envelop the towor from base to balcony a hoight of four hundred feet, Chicago Inter-Ocean. A peculiar incident of history la tho fact that two Jews of Bagdad huvo bought tho entire site of the ancient city of Babel, the great capital of No buchadnezzar. Tho purchusora aro two brothers EfTondl, ono of whom was elected member of tho Turkish Parlia ment which convened in 1878. It is remarkable that two Jews huvo be come the hoirs of the gardens of Soml rarals and tho palucos of Nebuchad uozzar, or what if loft of thorn, VIS'IING CARDS. ' "Their Introduction Not o Much a "Hitter nf Invention x of ITvnlntlon. It is no", easy to determine? with pre clski where nod when visitlajr and in vitation curds oPrinftted in Gnropa. In renJity they were not so ranch a matter of invotioT ii of evolution. Thoiirst peroa who utilized the white bck of the pl&yln; cmrd to write his name on when tat failed o find his friend at homo, or to lenve a message or invita tion for hint, wrwid. wen h knows, be entitled to the title of "invomor." Vo know that in Enpland these cards had their oripin ia the way indicated. Dr. Carlton, in English .Vote aid Quer ies, says that In examining a lot of old papors he oasie across a number of such cards Jaed 1752-1761. many of whieh were printed from English copper-plates on the backs tat old playing cards. The visiting cards were small, tho cards paring teen cut, and those of tho Earl and Countess of Northumberland wore printed on the back of tho trey of chtb and of the queon of diamonds respectively. The invitations to card-parties, printed from coppar plaUvA, w-re large enough to cover the whole back of a plnving card. The e-5s of (? ration's card is printed on the back of the ace of hearts, tuid lidy Northumberland's on the back of the ton of spale and tn of hearts. At the bottom of the latter are added the wards: "Without hoops if npreo.iblo." It is presumed the huge hoops of those day-, impeded atvess to the card-table. It would appe r that the use of such invltation-Cirds. especially in connec tion with card-parties, had become ostablishei in London in the first half of theeiphtoenth century. Previously. invitations to such parties were wont to be sent verbally through servants. The writing on tho back of playing cards was to prevent mistakes as well as from an appreciation of the symbolical appropriateness of the form. Card board proper, as we know it, had not yet been invented. Tho custom was found convenient, and so was extended to calling-cards, and became fashion able, Sume thirty-five years ago a house in Deau street, Soho. tho resi dence of oithor Hogarth (169S-1764) or his father-in-law, wa? in courso of re pair. On removing a marble chimney piece in the front drawing-room four or rive playing cards wero found, on tho back of which names wore written one that of Sir Isaao Newton (.born 16 12). It has been conjec tured those were visiting card; but it is really doubtfnl whether tho philosopher would hare employed such. Might they not have been produced by the artist as studies for his art? In plate IV of his Marriage-a-la-Mode, several such cards are represented ly ing ou tho floor in tho right hand cor ner of the picture. On one, the painter, with his wonted caustic humor, has satirized the ignorance of the upper classes by inscribing on it tho follow ing ingeniously misspelled polite in quiry: "Count Ilassel begs to no how Iado Squander sleapt last nlte." In a novel called tho "Spiritual Quixote," published in Hath in 1760 the scenes being laid in that city in the time of Beau Nash, who died 1760 n preacher is called to account because, while ho is continually inveighing against gam ing, he has in his pocket a pack of soiled cards ready for his engagements or pleasures. A noto says: "A set of blank ?.rds has sinco been invented by which the above absurdities may bo avoided." This noto seems to date tho substitution of visiting cards proper for inscribed playing cards. Nor must we overlook the passage in chapter 12 of St, Honan's Well, in which "tho Captain presented to Lucky Dodds tho fifth part of an ordinnry playing-card much grimed with snuff, which bore on the blank sido his name and qual ity." Whether Ben Johnson's ex pression: "You shall cartel hiiii" points to an earlior uso of thoso cards in af fairs of honor, we do not take it on us to decide. American Xotes and Queries. THE AQUATIC SPIDER. llnw It Propiirev Itnrir for nil Attuck On It i;nHuprctlic Prey. While their noarly constant abode is tho water, they aro, like most other spiders, air-breathors; consequently thoy need some special provision for providing thomselvos with air while living under tho water, and for this purpose thoy possess the art of con structing a kind of diving-bell. It is an interesting sight to witness one of them making his air-coll. Clinging to the lower side of a few loaves, and se curing them in position by spinning a few threads, the spider rises to tho level of tho water, with its belly upper most, and, doubling up its hind-legs, retains a stratum of air among tho hairs with which its body is covered. Then it plunges into tho, water and appears as in tho first stage of the making of its silvery robe, doing immediately to tho spot it had chosen, it brushes its body with iU paws, when tho air de taches itself and forms a bubblo under tho leaf. Tho spider surrounds this bubblo with the impermeable silky matter furnished by Its spinneret. Uo turuing to tho surface, it takes in tin othor Inyor of air, which It carries down anil adds to tho first one, nlso ex tending tho envelopo over It, Tho process Is kept up till tho ''dlvlng-bell" has reached tho proper slzo and is fin ished. Tho Ideal form of the construc tion Is that of a thimble, but It often as sumos an Irregular shape, liko an in verted snck. When tho spldor has takon possession of its redoubt it re mains quiot in It, head down, watching for tho appoaranco of an Insect. Per ceiving ono, It seizes it and returns to its lodge, which it has scciirod against Intruders by spinning threads across it, to dovour its proy at its leisure. -M, Emile Illanchard, in Itytulur Science Monthly. i V rr; Huron. Mich., undcrta.-? ha .4 lart- tent for funeral purposes. Whenever he has a funeral on a rainy day he places the tent over the cravo so that serrkes way bo hekt with but litUe inconvenience, A jmnnc man who presented a forged order to a Detroit theater mnna-F-rcr swallowed the paper when tho fraud was detected. No bad results followed, as he was a regular eater at the depot lunch counter. A HtUe pamphlet called "Humor in Yo' Sixteenth Century" shows thnt ye Joker of that period borrowed a great deal of his wit from ye humorist of the Nineteenth century, without givlntra particle of credit. Xerristetcn HtrttUi. "Now." said tho choir director, "sine the third stanza very softly. It is necessary to do so to bring out thi spirit of the composition." "Hymn No. 96." broke in the clergyman, "omitting the third verse." And the sinpers enjoyed it more than the di rector. KjrAanQt. Shakespeare, who left his wife his second best bedstead, has been sur passed in indifference by a modern En glish testator, who bequeathed hi wife one farthitp. which he directed the executrix to forward to her by post, unpaid, as an indication of his disgust at the treatment which he had received at her hands, and especially in respect of tho abusive epithets, such as "Old Pig," that he considered unjustified. Bees and hominp pigeons recently raced between Hamm and llhynem, Bolpium. The towns are an hour apart, and tho bet was that twelve Ives would boat twelve pigeons in makinp the dis tance. Four drones and eight working Ives well powdered with flour and re leased at the same instant with tho pigeons at Rhynern. A drono reached home four seconds in advanco of tha first pigeon; the three other drones and one pigeon came in neck and neck, and tho eight working bees came in just a trifle, about a length ahead of tho ten pigeons In sinking larffe pits and wells in Nevada stratas of rock salt wore cut through, in which were fouud imbedded perfectly preserved fish, which are probably thousands of years old. as the salt field occupies what was once tho bot tom of a large lake, and no such fish are now to bo found In Nevada. The speci mens wore not petrified, but flesh, and all wero preserved in perfect form, and after being soaked in water for two or three days could be cooked and eaten, but were not very palatable. After being exposed to tho air and sun for a day or two, they became as hard at wood. A novel and very pretty spectacle was introduced at a Brooklyn swim ming ehool exhibition. It was called tho chariot race. Two little papier mache chariot wore constructed and in each one was a four-year-old child. Harnessed to tho chariots wow two lit tle boys, who swam over tho course drawing their fair freight after them. The lnds wero about six years old, yet they mado very good time aud tho win ner was presented with a fine fishing polo. Tho children in tho chariot en joyed the raco quite as much as tho boys. WAR CYCLORAMAS. An Artlt Kxplalnn How Tliey Are Painted nil Put Together. Tho popular idea of how tho war cyeloramns, llko tho Battlo of l-ottys- burg, Battlo of Shlloh, Battlo ol Chickamauga, etc., are painted, ap pears very laughablo to a person who knows how the work Is accomplished The Battlo of Gettysburg nnd tho Siege of Paris have been shown for sovoral years, on opposito sides of Hubbard court, in Chicago, and tho stock paid largo dividends. Each was advertised as tho work of celebrated French artists, father and son, and Hie popular idea is that these gantlotnon painted them. Tho fact is that, beyond a general outlining of tho work, which was probably faithfully mado after maps procured from nuthontic sources, and a general direction of the plan ol the work, tho nrtist-ln-chlef had vorv littlo to do with it. No man engaged in a battlo scos it, and an accurate painting of two nrniios In combat Is impossible Tho general features only aro known. For Instauco. In tho Gettysburg painting thoro aro accur ately doftned tho roads, Crown lull, Littlo Crown Hill, tho wheat field in which a memorablo chnrgo was made, ono or two buildings which wero hendqunrtcrs of tho loading Cion- orals, and, with reasonable accuracy, the topography of tho country is de picted with excollent perspective. But the details of tho battle, tho actual clash of arms botweon this and that division or brlgndo, is loft a good deal to tho imagination. Thu artlst-ln- ehlof hires some mon to put In tho sky, other men to put in tho trees nnd foliage, other men to put In tho men in action. Attention is paid to develop Ing this or that memorablo incident, us, lu tho Gettysburg painting, tho death of tho cannoneer, tho amputation of tho soldier's limb beside tho hay stack. Tako It all together It makes up a picture that is thrilling enough to arouhu tho most Intense interest on tho part of tho old soldier. 1 remem ber standing by tho sido of a veteran at tho Chicago ptcturo of Gettysburg. Ho was explaining to a completion tho details of thu light, in which ho had bornu un honorablo part. "Say, Bill," said he, "at that stono wall there I lost my hat and, by gosh, if thoro ain't tho old hat lying thoro yet!" In painting pictures of battles shruwd artists never fail to bestrew tho Hold with lost hats, muskuts nnd cuntcous. St. Louis Qlobc-DcmooriU, MISCELLANEOUS. CURE FOR BL1NDNSS. An Operation Whleh Itellere the Rrala ami Ketore- SlRht. English surgeons have devised a new and beaeScent operation by which tho sheath of the optic nerve behind tho eye is opened and not only is the pres- ure upon the nerve removed, and to tal, or almost total, blindness cured, but the brain itself is relieved. Tha membranes which invest the brain, and are continued down to the oyo ia the form of a sheath which surround the optic nerve, secrete a certain amount of fluid, and whenever there is an excess of this secretion, or by other moans, as by the growth of a brain. tumor, the pressure within the cavity of the brain is increased, a super abundance ol fluid is apt to find It wav down the nerve sheath to the lerol of the eye, subjecting the optic nerve, to Injurious pressure and frequently destroying the sighL This blindness tnav bo permanent, even though tho pressure in the brain cavity which, causes it be ony temporary and bo cured. Dr. Dowccker, of Paris. sLv- toen or seventeen years ago. suppested that it was possible to open tho optlc-nervo sheath, and thus not only to relieve the nerve from pressure, but also to drain the brain cav ity and relieve the brain presuro there. Ho made two experiments in this lino upon two nearly hopeless cases, but he tried to feel his way to the nerve without the aid of sight, and to cut the sheath by means of an in strument carrying a concealed knife which was projected by 'means of a spring. Only ono other attempt of thU sort was made, and tho results not bolng satis factory, the experiment were dropped until last year. Dr. Brudenell Carter, of London, devised a method of operating by which tho sheath was exposed to view, and every step of the operation was guided by the surgeon's eye. In a paper read, before the British Medical Association, at its recent meeting at Glasgow, Dr. Carter told of four cases In which ho had performed the operation. In one the result was negative, so far as tho sight was concerned; In tho other three tho patients were not only quickly re stored to sight, but wero relieved or cured of headache and sickness arising! from pressure on tho brain. Dr. Car ter claims that the now operation could Im performed with certainty and with out risk either to life or to any im portant structure. Dr. Bickerton, of Liverpool, at tha snrao meeting said that after hearinj of Dr. Carter's first case, he has per formed the operation himself in two cases, in ono of which temporary res toration of sight was followed by a re lapse, but in the other ono the result was favorable. .V. i. Cor. Chicago Journal. WONDERFUL BLIND MAN. He Know How to Work it. Type-Writer nnil Can Ply mi Dr-ratt. Tho Hev. E. B. Donehoo, secretary of the Pittsburgh association which r c poses to erect an institution for tho in struction of tho blind, has received a remarkable letter from Alden F. Hays, a prominent blind citizen of Sowickloy. Tho letter Is In tho clear and pretty characters of tho type-wrltor, and to written upon the machine by that gen tlemnn himself. Iu It Mr. Hays brlofly tolls Mr. Dotiohoo his own history, ta show what wonders may bo workod. amongtho blind people by education. Ho was for eight years a pupil In tha Philadelphia Institution for the Blind, whore so many blind boys and girto from Allegheny wore trained. Ho la now a man of about thirty-eight year of ago. Ills career since leaving school and his present mode of life proeont fiomo marvolous facts. A few of thosa ho relates to Mr. Donehoo as an evi dence of tho bright future that Is pos sible for ovory blind person, If school ing advantages wero only moro com mon. Mr. Hays is a son of tho brilliant General Alexander Hays, whoso horola services In the Into war ondod with death in tho Wilderness. Ho Is now, nnd has been for sovoral years past, a coal merchant, supplying most ot Sowickloy with fuel. Ho conducts tho ontlro business himsolf without cler ical assistance. Ho Is totally blind, yet ho writes all his own orders by typo-wrltor for coal from tho mine operators, takes tho oar numbers whon thocVil arrives; weighs tho coal by tho wagon-lond for custo mers; gives tho drlvois properly filled out tickets, or makes out tho receipts; receives money, counts it, and mnkos change; keeps a set of books; walks to and from his homo without company, and in fact goes any whoro in Sowickloy hy himself aud without a cane. Mo is an accomplished musician. For eighteen years past ho has boon organ Is in tho Presbyterian church, and ho still takes ovory Friday afternoon from his business to rohoarso tho musio for this church on Sabbaths. ISttsburgk Cor. lioston Olobt. Swoct Uso of Adversity. Tho touch of adversity is just an necessary to bring out tho bosi thore. Is In some mon as Is tho touoh ot thu (rout to rovoul tho glories of tha autumn. What Is more beautiful than a troo or forost (lashing with all tho colors of tho rainbow! How delightful Is a drlvo with thoso bouquets of nature lining tho roadside! It Is aakl these splendors of tho autumn follago dro tho sunshine which tho trees havo boon tillontly storing up during tho luminor whon tho sun has boon shining upon thorn. Happy is tho man wlio, lu tho sunshliio of prosperity, has en riched h life with Uioso grace or ihavactor which Will shlno outmost beautifully when tho touch of adversity or sorrow comes! Chriitian Inquinr-z Itttsburyh Chronicle.