SIMPLER. ARTIFICIAL. ARM|^L £lt;. BETTER.—/ %! WH A f l i L\1mDEVICE o/ I|\, THIV SORT B\ a FARMER 1 n CAM Dp . ! .m Almost ii1 ANV sort A ffiY lt;V= farm 41 Km\ Work aU'ORSEONS, THAT LOCATES-6ULLE.TS ox SHELL. FRAGMENTS 2 » FE-W SECONDS lt;o. illSCIENTIFIC MARVELS DEVELOPED BY WAR•o precise, nothing to mathematically exact, has ever been known to surgical science. More than a thousand army surgeons were given special two week courses of training in the Carrel-Dakin method at the Rockefeller Institute before being sent overseas; thousands of wounda that under old methods would have meant death or amputation were healed with the least possible reminders remaining to the victims.Under the direction of officers of the Medical Corps of the army remarkable advance* have been made in the use of the X-ray for the detection and exact location of foreign bodies. Not only does the perfected X-ray apparatus show bynnnfnrr mhr tKn ___on pumping, but the blood collects In tks large veins of the abdomen and the patient literally bleeds to death in his own veins. After making this discovery. Dr. Porter worked out a method of stimulating the action of the lungs so as to draw the blood Into the chest cavity and by tbus forcing the circulation keep the victim alive until the fat particles could be absorbed. This is accomplished by forcing the patient to breathe a mixture of air and carbon dioxide, administered a cleverly devised apparatus. It is portable and instantly effective, triumph for American surgical Equally valuable as a permanent contribution to surgery is the new '•ambrine’* anaesthetic, the mercifnl invention of Dr. fJordon Edwards. $Dra*ed on a burn or(Copyright. JS13. by the New York Herald Company— All R!ght» Reserved.) (Copyright. 119. In Canada by the New York Herald Company IBy FRANK P. STOCKBRIDGE.When the history of the Great War comes to be written from the perspective of twenty years hcnco tho conscientious historian will point to the marvellous advances in preventive medicine, in curative medicine, in surgical principles and technique, in sanitation and in personal hygiene as perhaps the most important group of scientific achievements brought about hy the war and tho pressure of military necessity. In point of lasting and cumulative benefits to the people of the whole world, the new knowledge acquired of means of the prevention andwar, is so completely guarded that it now barely figures at all in army health reports. And before the United States had been in the war a year there had been developed a vaccine or serum against pneumonia, which holds every promise of accomplishing in the prevention of this disease what the anti-typhoid vaccine has done in its field.It is to the researches of the scientific staff of the Rockefeller Institute for Medical Research that this new prophylactic i? due, us well as many of the other remcrk-oble medical and surgical discoveries made during the war. Ten weeks before the Seventv-«ioventh Hivi*:trn «’-a«