experiment

(ex-per’im-ent) [L. experimen'tum]. A procedure gone through in order to discover or to demonstrate some fact or general truth. Goltz’s @., striking a frog on the abdomen will produce stoppage of the heart’s action. heat-puncture @., stimulation, mechanical or electric, of the corpus striatum, which produces a rise of temperature. Kti ’ @., injection of a solution of opium or belladonna into the bladder produces no symptoms of poisoning, thus proving the impermeability of the bladder epithelium. otte’s e. (to demonstrate the blind spot of the eye), an eye is fixed on the center of a cro marked on a card on which is also marked a large spot. The card is moved to or from the face, and at a certain distance the image of the spot will disappear. Nu baum’s e., ligation of the renal arteries of an animal in order to isolate the glomeruli of the kidneys from the circulation. O’Beirne’s e., the experiment of injecting air or water into a loop of intestine pa ed through a hole in a sheet of 355 EXTENSION paper: done to demonstrate the causation of strangulated hernia. Rémer’s e., the placing of abrin in the conjunctiva to show the formation of antitoxins. Toynbee’s e., the experiment of partially exhausting the air in the tympanum by swallowing while the nose and mouth are closed.