rabbits, is so easily performed that the phenomena observed by Bernard and Brown-Sequard have been repeatedly verified. _We have often done this in class demonstrations._"[B] "The cerebral lobes were removed from a young pigeon in the usual way, an operation * * _which we practice yearly as a class demonstration_."[C] Referring to the removal of the cerebellum, the same authority states: "Our own experiments, which have been very numerous during the last fifteen years, are _simply repetitions of those of Flourens, and the results have been the same without exception."[D] We have frequently removed both kidneys_ from dogs, and when the operation is carefully performed the animals live for from three to five days. * * Death always takes place with symptoms of blood poisoning."[E] In the same work we are given precise details for making a pancreatic fistula, after the method of Claude Bernard--"one we have repeatedly employed with success." "In performing the above experiment it is generally better _not_ to employ an anaesthetic,"[F] but ether is sometimes used. In the same work is given a picture of a dog, muzzled and with a biliary fistula, as it appeared the fourteenth day after the operation, which, with details of the experiment, is quite suggestive.[G] Bernard was the first to succeed in following the spinal accessory nerve back to the jugular foramen, seizing it here with a strong pair of forceps and drawing it out by the roots. This experiment is practiced in our own country. "We have found this result (loss of voice) to follow in the cat after the spinal accessory nerves have been torn out by the roots," says Professor John C. Dalton, in his Treatise on Human Physiology.[H] "This operation is difficult," writes Professor Flint, "but we have several times performed it with entire success;" and his assistant at Bellevue Medical College has succeeded "in extirpating these nerves for class demonstrations."[I] In withdrawal of blood from the hepatic veins of a dog, "avoiding the administration of an anaesthetic" is one of the steps recommended.[J] The curious experiment of Bernard, in which artificial diabetes is produced by irritating the floor of the fourth ventricle of the brain, is carefully described, and illustrations afforded both of the instrument and the animal undergoing the operation. The inexperienced experimenter is here taught to hold the head of the rabbit "firmly in the left hand," and to bore through its skull "by a few lateral movements of the instrument." It is not a difficult operation; it is one which the author has "often repeated." He tell us "_it is not desirable to administer an anaesthetic_," as it would prevent success; and a little further we are told that "we should avoid the administration of anaesthetics in all accurate experiments on the glycogenic function."[K] It is true the pleasing assurance is given that "this experiment is almost painless"; but on this point, could the rabbit