302 (return) [ Müller remarks (‘Elements of Physiology,’ Eng. translat. vol. ii. p. 934) that when the feelings are very intense, “all the spinal nerves become affected to the extent of imperfect paralysis, or the excitement of trembling of the whole body.”] 303 (return) [ ‘Leçons sur les Prop. des Tissus Vivants,’ 1866, pp. 457-466.] 304 (return) [ Mr. Bartlett, “Notes on the Birth of a Hippopotamus,” Proc. Zoolog. Soc. 1871, p. 255.] 305 (return) [ See, on this subject, Claude Bernard, ‘Tissus Vivants,’ 1866, pp. 316, 337, 358. Virchow expresses himself to almost exactly the same effect in his essay “Ueber das Rückenmark” (Sammlung wissenschaft. Vorträge, 1871, s. 28).] 306 (return) [ Müller (‘Elements of Physiology,’ Eng. translat. vol. ii. p. 932) in speaking of the nerves, says, “any sudden change of condition of whatever kind sets the nervous principle into action.” See Virchow and Bernard on the same subject in passages in the two works referred to in my last foot-note.] 307 (return) [ H. Spencer, ‘Essays, Scientific, Political,’ &c., Second Series, 1863, pp. 109, 111.] 308 (return) [ Sir H. Holland, in speaking (‘Medical Notes and Reflexions,’ 1839, p. 328) of that curious state of body called the _fidgets_, remarks that it seems due to “an accumulation of some cause of irritation which requires muscular action for its relief.”] 309 (return) [ I am much indebted to Mr. A. H. Garrod for having informed me of M. Lorain’s work on the pulse, in which a sphygmogram of a woman in a rage is given; and this shows much difference in the rate and other characters from that of the same woman in her ordinary state.] 310 (return) [ How powerfully intense joy excites the brain, and how the brain reacts on the body, is well shown in the rare cases of Psychical Intoxication. Dr. J. Crichton Browne (‘Medical Mirror,’ 1865) records the case of a young man of strongly nervous temperament, who, on hearing by a telegram that a fortune had been bequeathed him, first became pale, then exhilarated, and soon in the highest spirits, but flushed and very restless. He then took a walk with a friend for the sake of tranquillising himself, but returned staggering in his gait, uproariously laughing, yet irritable in temper, incessantly talking, and singing loudly in the public streets. It was positively ascertained that he had not touched any spirituous liquor, though every one thought that he was intoxicated. Vomiting after a time came on, and the half-digested contents of his stomach were examined, but no odour of alcohol could be detected. He then slept heavily, and on awaking was well, except that he suffered from headache, nausea, and prostration of strength.] 311 (return) [ Dr. Darwin, ‘Zoonomia,’ 1794, vol. i. p. 148.]