THE SUNDAY OEEGONIAX. PORTLAND, APRIL 21, 1918.. Uncle Sam's Stone Sifflif fnffSiP mdmm0B fitf Ifm-mi rate lifem, m- Miii l i.Sapit rVirvr1rr. 1T. bv Frank O. Carsetr. WASHINGTON. D. C 1W. Cross ing th ocean in great ablpa of atonal Sandbagging tha submarine with cluba of reinforced concrete! Carrying supplies by the thousands of tona to our troopa and our allies In vessels made of aand and cement tied together with ateel! Thia la one of the live experiment that tbe Emergency Fleet Corporation baa now under way. It la an experi ment tbat promises much for Ita suc cess, for It may create a new fleet tbat will rank aide by aide with our veaaela of ateel and wood In gaining tha victory over the Uermans. A branch of con crete shipbuilding baa Just been created under the direction of Mr. Kudolph J. Wlit. the ectentlftc expert In concrete of the bureau of standard, and a force of marine draftamea and of men aktlied la tbe handling and testing of concrete construction la already at work. Ten tative contracts have been let for the building; of several auch ships, subject to full payment on the part of the Gov ernment only upon their proving safe aad successful for all the purposes for which they are planned. The carrytns out of these contracta la now under way. and If they succeed a large ship building programme will be Inaugu rated In many of the porta along our seacoast. The shlpa contracted for range In else from leee to Tie tone, and they are to bo built after specifications and plana furnished by the United States Govern ment. The companies engaged In auch construction are In the three cltlea of Boston. New Tork and San Francisco. The contract with each provldea that tbe Government shall pay only one-half the cost of building tbe vessel If It falls to come up to all the requirements when tested In all sorts of weather and nder vartoua other conditions. short. Vncle Sam pays only one-half the cost of tha experiment If It should fall to work. But before I write more of tha Cor. ernment plana let me rell you what haa been done and la being done la con crate shipbuilding In other parts of th world. The atone ahlp la not a novelty. Away back in Ii4. 1 years before the world waa afflicted with the birth of tha Kaiser, a. Frenchman named hot made a small boat of reinforced concrete, and this waa shown six years later at the World Fair In Paris- exterior and Interior taken during the construction, wbtch show tha enormous lse of this huge boat of atone. It waa with the photographs before me tbat I talked with Mr. wig. the chief engineer of tbe concrete ship building branch of the Emergency Fleet Corporation, about the vessels which Vncle Sam will construct. They will be built after much the same meth ods as thoee employed in making the California ateamer and some of them will be even greater In size. The larg est shlpa will be about 410 feet long, 64 feet beam and 3 feet In depth, and their draft will be X feet. These big shlpa are to be of 7500 tona, and the vessels It Is proposed to construct will range from that slxa down to 3000 tons. The ablpa will have reciprocating steam englnea and each will be moved by meana of a abaft and screw propellers. Tbe largest ships will be equipped with steam turbines and tha machinery all told will be much the same as that or tha fabricated steel vessels or wooden vessels now being constructed. The walla of the hulls will range in thickness from four to 10 Inches. They will be made of concrete and ateel. the ateel being In the form of bars. from one-half inch to one Inch and a half In diameter. The bara are ar ranged In a network, so that each car ries a certain carefully estimated pro portion of the load. In tha building of a ahlp like this nothing la left to guesswork. There has to be Just so much concrete, a mixture of gravel, aand and Portland cement, and just so much steel, run- that It would reach from Boston to New York and thence on to Washing ton. Tha larger steel rods are bigger around than a hoe handle. "Another advantage to the Govern ment In building concrete ships in this time of great need.' continued Mr. Wig, "la that the work can be done by a class of men which is not now employed In war work and by men who cannot be used in the building of shlpa of wood and steel. One of the chief difficulties In our hurried ship building construction Just now is the Isck of skilled labor. We cannot find the skilled men, and It takes time to train them Into the work. This con crete construction brings in a new class of labor as well aa of material, and thereby adds one more factor to our side of the equation In winning the war." Have concrete ships any advantage over ahipa of ateel and wood?" I asked. They have some advantagea and some aisadvantages," replied Mr. Wig. but the chief reason for the concrete ship Just now Is that we need more vessels to withstand the submarine warfare, and that we must have them at the earliest possible moment." Throughout our conversation about concrete shlpa Mr. Wig waa very con servative. He evidently believes that the new vessels will do all that la ex pected of them, but says that the Gov ernment expects to test them out thoroughly before entering Into any arge shipbuilding programme. Many of Con.'S-tfLictj'on. ment on such matters Is worthy of where the tide cam up and the water nine here and there through It. held the problems of the concrete ship are togetner by the cement, and this ateel I being carefully atudled. and experl- must be placed In Just the right spot. I ments are made to remedy the dlfficul- It was a success on tbe water, and as late aa 1J was reported to be In flrst-claaa condition. The tutch began to build barges of reinforced concrete 11 years ago. and there are now barcea of & tona on tbe Holland canal. Tbe Italians have been using concrete barges for more than II years, and there la one 14) feet long and 34 feet wide which haa been em ployed on the Wellana Canal since 110. It la used for carrying aand and grave aad heavy loada of atone. We have been using concrete barges on the ranama Canal for eight or nine rears, and they have been making great pontoona there for landing stagea of i he same material. There are several concrete scows on the Chesapeake Bay, aad there la a concrete pontoon of 713 tona In the harbor of Sydney. Aua trails. There are concrete boats on the Manchester ahlp canal, and a con crete barge waa built for use on the laria ship canal only last year. Today one of the chief concrete ship building centers la Norway. Tha Foug- ner Steel Concrete Shipbuilding Com pany there la making ahlps varying In sue from 2U0 tona to J000 tons, and these are Intended to carry coal la the pen season. So far one of COO tona haa gone to sea, and It is said to with itaad the storms of the ocean. I bare efore ma a catalogue Issued by the Vougner Company, l.i this it offers to leliver seaworthy ships of 300 tons, lead weight, within three or four -oaths, and states that It will hav ome ships of 30O0 and 4000 tona ready for delivery this year. The Germans hare also done something In concrete Upbuilding, but no statistics as to heir progress are. for obvloua reasons. available Juat now, Last year concrete ahlp construction was going on la utnmtrk, France. Kngland. Norway. Spain. Canada and tbe I nlted States. Our Consul at Chrla- anta baa lately described a plant at Vorway. where concrete vessels of 100 ons displacement are being built, and t Is stated that the Swedish Minister f Marine bas recently ordered a llght- r of 1004 tona of a plant where they re now erecting ways for the building f ships of 4tv tons. The largeat concrete vessel ever planned waa launched last month by he San Francisco Shipbuilding Com any at a California port. Thla Is i teamer to be used in the trans-Pa Ifio service, ft haa a displacement of tie tona aad will carry Svoe tona of eadwetght cargo. The ship Is 320 feet nr. over 45 feai wide and 30 feet deep. When fully loaded It will draw 34 feet f water. The ship Is a monolith, or easel of continuous atone. Her floor four aad one-balf tnch.ee thick and ae walls of tbe hull are four Inches kick, with a great ateel shoe down the Sew. Imbedded la the concrete Is a ketry- of steel mesh, consisting or ncavy iron bara, which weigha alto- el her more-, than sue tona. The boat will be equipped with triple expansion eastnea or more than 170 horsepower. ad it will be moved through tbe water by a screw propeller at 10 or It knots per noux. 1 have photograph of U for every bit of It haa Its own work to do. The whole Is carefully planned by tha naval architects and designers and everything is done according to the plana and specifications. The first thing that Is done ia the building of wooden mold of the exact shape and slxe of the outside of the vessel. The steel bars are then laid In the exact places set down In the plans. They are placed In a crisscross or basket shaped network and are tied in place by amall plecea of wire, so that each bar ataya where It la put. After the whole network haa been accurately fixed an Inside wall of boards Is built up and the concrete poured In. When It haa hardened and the framea taken off It leaves the walla of the hull inside and out aa smooth and clean as the walls of your parlor. The Inaide framework. Including the partitions, tbe girders and beams, are II made of reinforced concrete. The steel rods are put In bent to tha ahape the framework requires, and a box is made around them. Into which the concrete la poured. The cement mor tar begins to set almost as soon aa it is in place, and within a short time It is aa hard as though the whole were of stone. There ia no structural stee In the ship. Every bit of the frame work ia of thia concrete, reinforced with ateel rods, and thia ia true of the bulkheads, the decks and the hatches. There are no rivets whatever and tha whole ahlp la for all the world one huge structure of solid stone, with these steel bara running thia way and that everywhere through It. Aa it floats on the ocean It looks just like one of the steel steamers, and it could hardly be distinguished from the smal ler greyhounds of the Atlantic. I asked Mr. n ig as to whether these ships would not be very much heavier than other veaaela of the sama alxe now on the ocean. Ho replied that tha weight of a vessel of reinforced con crete will be from It to 30 per cent heavier than one of the same tonnage constructed of steel, but that tha cost of the concrete ship will be only two- thirds or three-fourths aa much as that of the ateel ships. It will take as long or longer to build the concrete ahipa aa steel ships, but tha plant for erecting more quickly, and It will be much less expensive. A steel shipbuilding plant costs In the neighborhood of 1400,000 and upwards, whereas one for concrete ships can be erected for f 2000 or less. "Moreover." continued Mr. Wig, "the materials used in making the concrete fleet are such that shipbuilding plants can be erected almost anywhere along our coast. All thst we need is some Portland cement, some steel rods and a gravel bank, or one might nse a clay bank and kiln and make terra cotta instead of stone. They are now using crushed terra cotta in the concrete vessels being built In San Francisco. The terra cotta If properly burned be comes aa strong as tha atone when mixed with cement. It la full of pores and air spaces, and consequently much lighter. It Is very Important to reduce the weight of the hull as far as pos- ible consistent with the strength of the ship. It Is estimated that for every pound per cubic foot that we can cut down the weight of tbe concrete wa can reduce the weight of the ahlp from 1 to 30 tons, depending upon the slse of the vessel. If the weight la reduced 30 pounds per cubic foot, the ship will arry from 3va to 400 tona more of cargo. It la therefore important that the concrete be made as light In weight aa la possible." I here asked as to the amount of steel n the big ahipa, and waa told that each of the larger vessels will have more than 11.000 steel roda of the larger alxe weighing "60 tona and an equal num ber or more of ateel rods ranging from one-half an Inch upward In diameter. Each of these rode ia 00 feet long and f all were joined together they would make ons sreat strand ot steel ao long ties which arise. A very Important matter Is the durability of the ship and whether Its life may not be lengthened. Mr. Wig thinks it can. and his judg- great consideration. In connection with the bureau of standards here at Wash ington, he has been engaged for a long time investigating all matters relat ing to concrete and its durability. It was not long ago that he was sent by the Navy Department to Inspect the concrete construction along the At lantic and Pacific coasts of this coun try and Canada. He also visited all the ports and examined the concrete harbors of the West Indies Islands. During this work he found that the concrete was greatly affected by the salt in sea wafer, a matter which Is Important In making these ships to sail over the oceans. He found that wherever the concrete came in contact with the aalt air it was deteriorating and disintegrating, and that the dete rioration was much greater in some places than in others. For instance. he examined a series of concrete plat forms erected on concrete piles in the Cape Fear River from Wilmington.- T. C to the sea. The platforms were built bv tbe lighthouse service to hold the beacon lights outlining the chan nel. At Wilmington, where the water was fresh, it was found that the con crete was almost as good as when it was made, and that the steel used to reinforce It was clean and free from rust. .A little further downstream. was brackish, the suit water had eaten Into the iron, forming rust, while at tbe mouth of the river so much rust had been formed upon the iron that it had swelled and caused the stone posts and platforms to crumble to pieces. From these and other observations Mr. Wig reported that sea water has a bad effect upon concrete. He believes, however, that certain methods of treat ment may be used which will prevent the salt water from reaching the iron. This may be done by galvanizing or painting the rods before they are put in. This is being done In the ships now upder construction. It may be possible also to paint the hulls of the ships so that the sea water or moisture cannot go through the con crete. As it is now, when the vessel is completed, it is practically impervi ous to sea water, because the cement, when It sets, covers the outside with a skin of limestone, which sea water does not penetrate. This protects the hull until it is abraided or broken, at which time the salt moisture comes In. The problems that enter Into the de signing and building of a ship of this kind are puzsling. The man who knows nothing of concrete and the action of metal upon it would naturally suppose that If the steel rods in the concrete rusted holes might be created through which the moisture could seep. The fact is, the rods swell with the rust and break the artificial etone in just the same way that the old Egyptians used to break great blocks of granite by drilling holes and driving in wooden pegs, which they then soaked with water. The water caused the wood to swell and this broke the granite. In the same way the particles of rust take more room than the solid rod and break the concrete.: In fact, everything connected with a vessel of th:.s kind is a matter of scien tiflc study and experiment. Its build ing must be carefully watched, for any flaws that may occur during the con struction are hidden in the concrete after the ship has- been poured. This is not the case with ships of wood or steel, where the construction can be examined, when the ship is completed. For this reason the inspectors and su perintendents must be men of more than ordinary ability, and they , will probably command as high, if not high er, wages than similar men employed on the steel and wooden fleet. Uncle Sam will have his own Inspectors on the Job all the time. It will be on the common laborer that the saving will come. Among the factors to be considered in building the concrete ship is the stress that the hull will have to un dergo in riding the waves. Thebuilders must consider the fact that in times of storms the great vessel of stone often rests on two wavea with no support in the center, and that thia tends to bend up the ends and force down the center. ' Or the ship may be riding on the crest of a wave with Its prow and stern in the air, in which the tendency is to pull down the ends and bend up the center. In short, a continuous motion is going on in the atoms of which the stone construction is made. The men have to know, all about thts motion; they muBt understand' the elasticity of concrete and how it compares with the steel rods within it. I am told that they have as certained that the stretch of the con crete is just 10 times as great as that of the steel.' In other words. If a cer tain weight attached to a concrete post suspended in the air. will stretch that post, say, ten-one-thousandths of an inch, which is, perhaps, the thickness of a horse hair, the same weight attached to a steel post of the same size would stretch it only about one-thousandth of an inch, equal to the thickness, per haps, of a silky hair of your baby. 'At any rate, tbe stretch of the steel would be only one-tenth that of the concrete. Now, a ship in action has a continuous motion going on in the wear and tear of the particles composing it. and, in a solid mass like that of the concrete ship, the effect of this motion must be understood and accurately provided for. These seem little matters to the ama teur, but they are of great importance to the scientific expert and the ship engineer. The work of investigating the prob lems of the concrete ship is not con fined to Washington. The Emergency Fleet Corporation is seeking informa tion from every part of the country, it is in communication with and has en listed the assistance of the experts in cement-and concrete construction throughout the United States, and all are doing more r less work in study ing the problems at hand. The cor poration is also in touch with the work that is going oil along the same lines in various parts of Europe, and the re sults of this work are being carefully watched by the whole shipbuilding industry. Half of the yearly egg supply Is produced in March, April. May and June. It is the season of over-production, when more eggs are laid than are consumed. Back-yard poultry raisers and others should take advantage of this situation, and store the sur plus eggs against the period of under-production. It is just as practicable to preserve eggs aa It ia to preserve fruits and vege tables, and a whole lot easier. Now Is the time to do this, when prices are low. BT ROBERT ARMSTRONG. Expert Poultrymaa and Writer. FEW weeks ago. the wholesale prices on fresh eggs dropped 22 cents a dozen In one day's trading In some of tbe large Eastern cities; In six days th prices dropped over 30 cents a dozen. Why? Because It was the opening of the season of over-pro- A" ductlon. There had been a spell of mild weather, the hens started to lay freely, and aupplies came into the wholesale markets in large quantities. Shipments came In faster than they could be ab sorbed on the basis of Winter prices. bids fell off. and the prices sagged heavily; result, a break In the egg mar. ket. According to the reports it was the sharpest break in prices ever . re corded for such a brief period. A similar situation takes place every year. Egg production is not uniform, and it never will be equally distributed. Spring is the natural period for egg production, and for about four months, commencing with the first week in March, half of our yearly supply - of eggs Is produced. For the balance of the year production is light, and during the Fall and early Winter months it is almost nil. Then it is that the prices on fresh eggs soar. Farmers produce practically no ezgs during cold weath er; the available supplies are mostly from commercial poultry plants.. So long as eggs are traded In on the basis of the law of supply and demand, prices are going to be low in the Spring. BEARDED GOLDEN POLISH. HESE races of Polish fowls were J white-shelled eggs, so that for a home I first known as tha Crested Dutch. -A- i. a. neie.hi that they came from Italy to the Netherlands, thence to Western Europe, and later to America. The first of these varieties was the White Crested Black: and from these the Dutch breeders obtained the silver and golden Polish, some with crests only, and others witn iwin crests ana beards. Tha Golden Polish, as shown above, are of the latter variety, and they have Immense crests and beards which almost hid their eyes. Their Blumaae la generally golden tan In color, each feather laced or edged with brilliant black. The hen ar excellent layers or large flock that will be a delight to the eye, as well as a producer for the table, the Golden Polish will be found both pleas urable and profitable. The hens are nonsetters, hence their eggs must be hatched by other hens or by artificial means. The chicks are rather delicate unless kept dry. Damp ground or damp coops ar fatal to young Polish. In size these fowls compare with the Leghorn and weigh about the same. They are very fine-honed and carry a larger proportion of desirable meat. The legs are blue, or. in old specimens, white; the skin is white, and each fowl has a round protuberance on Its skull, from which the feather of the crest grow. - The markets' are then glutted with eggs, so to speak, and to find 'an outlet for them the bulk of the shipments must go into storage. Backyard poultry raisers and farm ers will find it to their advantage to enter this field, if only to meet the de mands of the home table. Why sacrl flee your eggs at low prices in a glutted market, when you might just as well store them at home, and use this sur plus later on? The professional egg dealer find It profitable to store eggs, why not get in on this ga'me? Very little equipment is required, and the risks are small, providing certain pre cautions are taken. It is not necessary to store the eggs all at once; you can put them down a few at a time every day, as you get them. Preserving eggs is as simple as preserving fruits. And where is there a woman who -does not take pride in displaying a storeroom or cupboard filled with rows of Jellies, jams and other goodies? She regards preserving as a part of good housekeeping, much the earn as cooking and cleaning. The home preservation of eggs is by no means a new practice: it bas been observed for years. Unfortunately, only a lew housewives have taken advan tage of this opportunity to make a worth-while saving. The chief reason for this oversight is that the average housewife does not know about it; or if she has heard of it. she regards it with -skepticism, or as being difficult to carry out. These fears are groundless. as we snail see. Principles of Preservation. To fully understand the keeping qual ities of eggs, one should have some knowledge of their structure. When an egg is laid it is practically free from the bacteria which cause decomposition. but it is very susceptible to these micro organisms, which gain their entrance through the pores In the shell. The chief source of infection is dirty or damp nests. Ekks resemble milk, in that tney oner an excellent breeding place for bacterial development; they spoil readily when exposed to insanitary conditions. The shell of the egg Is porus to admit the passage of air when the egg is hatched, so that the embryo may breathe; but this shell is coated with a mucilaginous substance, sometimes spoken of as the bloom" of an egg, whicn prevents tne entrance of bacteria unless the coating Is verv old. wet. softened by moisture. or rubbed off by careless nanaung. Obviously, it is a poor practice to wash eggs, or to hold them in damp places: and it Is equally bad to expose them to heat, or to handle them more than necessary. Most of us appreciate the fact that eggs are highly perish able; yet the majority regard this per ishability as having to do with the fragile nature of the shell, whereas, moisture is one of the greatest foes. quite as destructive as heat. There are several ways of preventing bacterial development: One is by shut ting out th micro-organisms, another is by cutting off the supply of oxygen. and a third method consists of lower ing the temperature below the point where this growth will develop, which is commonly called cold storage. . The housewife canrtnt hope to con duct an individual cold storage plant, but she can operate a system of ei- luding the causes of deterioration, by immersing the eggs in a liquid pre servative, such as lime water or water glass, which is another name for sodi um silicate or potassium silicate. Water Glass Treatment. Some 20 or more methods have been tried out in the preservation of eggs, embracing every conceivable treatment, from standing tbe eggs in brine to coating them with shellac Only three methods gave perfect results, and these were: First, eggs coated with vase line; second, eggs packed in a solution of lime water, and third, eggs stored in a solution of water glass.' It was found, however, that the lime treatment sometimes communicated a distinct ordor and flavor to the eggs. The vaseline method was too trouble some. Because of these facts, the water glass treatment is to be recommended; it has given satifactory results under various circumstances for a number of years. Water glass, or soluble glass, is com monly sold in two forms; a thick, syrup-like liquid of about the consis tency .of molasses, and in the form of a powder. Both forms are sold by lead ing druggists, though the liquid glass la probably the most popular. Usually a considerable saving can be made by ordering the material direct from the manufacturers at wholesale prices. According to the test conducted by the leading agricultural stations, a solution of the desired strength may be made by dissolving one part liquid water glass in ten parts water. If the powdered glass is used, a slightly smal ler quantity of the silicate may be employed. Only pure water should be used in making the solution, and to be sure of the purity, the best plan is to boll the water for about 20 minutes, then allow It to cool before adding the silicate. In the case of powdered glass, stir the liquid' vigorously to prevent the forma tion of lumps. The water glass is heavier than water, and -will go to the bottom unless thoroughly mixed. Stone Crocks Are Bent. Almost any sort of a container will do for packing the eggs, but It Is best to use one of wood, glass or crockery than one of metal. Large earthenware crocks which have a glazed or vitrified surface re preferable. They are easier to clean and will not absorb the solution. Five-gallon crocks fitted with covers are most desirable. Thoroughly scrub and scald the con tainer before it Is used, and then store the filled receptacle In a clean, cool place, such as a cellar. If kept too warm, excessive evaporation is likely to happen, in which event the silicate Is apt to leave a slight deposit on the shells of the eggs. All eggs must be completely covered by the solution as long as they are in storage. If some of the liquid evaporates, add to it from time to time. If the eggs are carefully packed in the vessel, on end and close together, a gallon of water glass diluted in the proportion of one to ten, will cover about 60 dozen eggs. Endeavor to keep two Inches of the solution over the top layer of eggs at all times. It is not necessary to pack the eggs all at once. In the case of small flocks, this would mean holding the eggs too long: The eggs should be placed In the preservative the same day they are laid. The quicker they- are safeguard ed against contamination the better. As the eggs are gathered from the nests place them in the solution. It is essential, of course, that the eggs be strictly fresh, and it has been found that sterile eggs keep better than fertile ones. Never use cracked eggs; they are sure to apoiL Since high-grade eggs are vital to the success of the. work, it is best to be on the safe side and test them before they are placed- in the solution. This is easily done by holding them before a candle, to determine their freshness. -and to detect the presence of btood clots. When we consider that one or two spoiled eggs may break and render the entire container unfit for food, it be comes apparent that care at the begin ning is paramount. ' The inethod as outlined is not- in-, tended to keep eggs indefinitely, but for a period of six to ten months, which is sufficient to carry the operation overi to the following season of heavy pro-' duction. GERMAN NAMES UNDER BAN i Australia Indicates Dislike for Kai ser in Recent Ruling. MELBOURNE, Australia. March 20. ' It has been decided by the Parliament of South Australia that all towns in the state bearing names of German origin are to be renamed. Among the. names are Verdun, Mount Kitchener, Beatty, The Somme, Tbe Marne, Cam brai, Jellicoe, Jutland, Sturdee and Al lenby. The government announces that the new names are selected with a view to impressing on the minds of children and others a knowledge of events con nected wtih the war, particularly events in which Australia played a large part. GET RID 17 A T 0FTHAT V I Free Trial Treatment on B9 quest. Ask also for my ''pay when -reduced" offer. My treatment has often reduced at the rate of pound a day. N: dieting, no exercise, absolutely safe and sure method. Mrs. E. Bateman writes: Have taken your treatment and it is wonderful how it reduces. It does just as you say. I have reduced a pound a day and feel line. Mrs. Anns Schmidt write,: I weighed 17S pounds before I started your treatment and I now weigh 138 pounds. You : may print this it you like. These are just examples of what my treat ment can accomplish. Let me aend you more proof at my expense. DR. B. NEWMAN, Licensed Physician. -286 Fifth Avenue New Tork, Desk K-301. To SAVE LITTLE CHICKS and help them to crow into big, tronf. healthy birds. FEED III Diamond Chick Food Ask for Poultry Supply II Catalogue and "Buckeye" Booklets. l f 1 1