Dr. Lewaschew drew a thread moistened with acid through the nervus ischiadicus of the one leg to set up an irritation in the nerve. At intervals of from three to six days a thread was sewn nearer the peripheric end of the nerve. This was continued till the death of the animals. Some died rapidly of gangrene of the extremities and septicemia, others at the end of two to four weeks only of putrid infection and dysentery; many, however, supported the operation for two or four months. Some of the animals became seized with epileptic fits, which increased till life ended.--_Petersburg Med. Wochenschrift_, Vol. XXXI., 1880. =Lewes, George Henry.= B. London, 1817; d. 1878. Studied med., anat., and physiol. Author of “On the spinal cord,” 1858; “The nervous system,” 1859; “Physiology of Common Life,” 1860; “Aristotle,” 1864; “Problems of Life and Mind,” etc. “A triton whose cord had been divided some weeks was completely cut in two. The head-half immediately began crawling away with great activity, which, as this half contained the heart, and almost all the viscera, was not surprising. The tail half remained for some time in a standing posture, and then began to crawl forward. After three steps it paused, remaining quiet during five minutes, and began again, but feebly. The tail moved spontaneously, but with great slowness; when it was touched both tail and legs moved. I then placed it under a glass, with a moistened sponge inside to prevent evaporation from the skin, and left it there for two hours, watching its spontaneous, though very languid movements. If any reader remains still unconvinced, I can only recommend him to divide the spinal chord of a frog a little below the shoulders, and keep the animal for some days or weeks (care must be taken to prevent water getting to the cord, as that soon kills the animal), watching it, and testing its sensibility.”--_Physiol. Com. Life_, Vol. II., pp. 255-6. “Marshall Hall reports the case of a man in whom accident had destroyed all sensation and voluntary motion, yet who drew up his legs when they were tickled, without once feeling the sensation of tickling.… This case is constantly cited, and is, indeed, very striking. It seems to have a far greater value than any experiments on animals can have, because we cannot question animals as to their sensations; we do not _know_ whether they feel or not. We can only infer: whereas we can interrogate the human patient.”--_Ibid._, p. 861. “Has performed a great many experiments (6,354), nearly all relating to the nerves, (6,365), mostly on frogs and other cold-blooded animals (6,357), and not more than a dozen rabbits and pigeons in a dozen years under anæsthetics (6,361-4).… Could not himself bear to experiment on dogs or cats (6,360, 6,379), rabbits would nearly always do instead (6,413-7).”--_Digest Ev. R. Com._, p. 41. =Lewin, L.= M.D. Asst. at the Pharmacol. Instit., Berlin.