m U* yi I »~t i-, f I f ’ê'EK H ir in ’ m i r « if . I <■ <r « ' • • . / , r / 1 ' 1 .'A b J L t ’ i > «• a». « - » ». . « . ....... . , J ' 1 z ia * lu itM if f illi • • I : lli r - I • t ' j ï I / " 1 U'j 1 1 . 1 Jf " N ■ V j •• ■j. rpsyQU Itavi uneven puikon g knocks in the motor o f in traffic, ' when shifting i * ■ < . r “ an example of. smokeless powder in the big Without smokeless * S R i W n b ^ > < ’ owerful çxplônon, always accom panied by *a sharp,' quick ’r e p o r t a i t tears; jerk s, pounds and knocks, if not prbperly^controllea. ’ ‘ W hether i n a ’ ca n n o n , or in ln *au tom ob ile engine, 'detonation causes aren d - ing/rapid frictional wear. < « i» i, forcejknown.tojcxplosive ^engineers! • n ,,wv _____ _ In combination with Union Non-Detonating Gaso- ic it reprere.its the smoothest, swiftest and most pow- Ful of fuels now known for use in motor cars. only a few shots with a charge such.as.dynamite they would be unfit for fur ther use. < T h e damage would result from detonation— all ther force of the explosion being expended in one crashing blow against the projectile. Dynamite would be a detonating charge. •/* * • • 1U H U i i i I t o “ smokeless * powder is swr-detonating. I t stops the “ knocks” by completely ending detona- tion— by causing the gas to keep on delivering its expanding power throughout the entire length of the piston’s stroke.^ , •Heavy Heavy “ knocking” knocking in a motor’s motor s cylinder is like the J — — A _ . _ _ r L.^.1. a k a k M 1 U.A. in the K A X old-time, V 1 z-1 »VrV XV short- _ detonation of a high explosive range g u n / a ■ „ „ t tlroueh tht t m . A trcmendols force is thus - • u n ‘ b iid u ‘ n d c T g o o d - ’ controL ' U n io n -E th yl’s action is like that of “ smokeless” ' txwder the modem lone-ranee nfles, now used on the dreadnaughts of the world’s great navies. Here is greater power with less recoil. And projectiles a rt thrown several times as far .with less harm to the It completely ends the detonation and so completely ends the “ knock.1 guns. Union Gasoline has always been an outstanding non- detonating fu e l for motor earsy acting against a motor’s piston as - smokeless acts against the projectile -------- r powder --------------— . 1» rtrtlirxr li^e ^kniW*k** in a gun. . I t exerts greater power with .withL lest knock and vibration than ordinary detonating gasoline. And now comes the E th y l com pound a highly ef- fective agent that science has developed after years of ill further control. detonation tests and actual in a motor fuel. Thus lack of power, sluggishness on hills, sputtering • • -------- nation pick-ups, and the kindred » motor ilk that ana detonation nocking cause, are entirely eliminated. knockini Strains on your motor are reduced. Repair bills m m » less frequently- A new joy» a new th rill in raving soon becomes your prim e delight. j — Um on*£thyl today» Put it to the hardest tests1 vou bnow. • - a -,/xnw» * ■ > r'-'; < :~ MA The Colot has nothing to do with the Quality. « m ì ‘< ’ i ¿li«A • ««•* " J it *’■ . f iS r l * 1 « •< - ;îifiïîS i< i« B fr s i