Note 313 — Chapter IV
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None of the laws of hereditary descent connected with the formation of character, have yet been generalized; nor is our knowledge much more advanced respecting the theory of temperaments, which still remains the principal obstacle in the way of the phrenologists. The difficulties attending the study of temperaments, and the obscurity in which this important subject is shrouded, may be estimated by whoever will compare what has been said upon it by the following writers: Müller's Physiology, vol. ii. pp. 1406–1410; Elliotson's Human Physiology, pp. 1059–1062; Blainville, Physiologie Générale et Comparée, vol. i. pp. 168, 264, 265, vol. ii. pp. 43, 130, 214, 328, 329, vol. iii. pp. 54, 74, 118, 148, 149, 284, 285; Williams's Principles of Medicine, pp. 16, 17, 112, 113; Geoffroy Saint-Hilaire, Anomalies de l'Organisation, vol. i. pp. 186, 190; Broussais, Examen des Doctrines Médicales, vol. i. pp. 204, 205, vol. iii. p. 276; Renouard, Hist. de la Médecine, vol. i. p. 326; Sprengel, Hist. de la Médecine, vol. i. p. 380, vol. ii. p. 408, vol. iii. p. 21, vol. v. p. 325, vol. vi. p. 492; Esquirol, Maladies Mentales, vol. i. pp. 39, 226, 429, 594, vol. ii. p. 29; Lepelletier, Physiol. Médicale, vol. i. pp. 139, 281, vol. iii. pp. 372–429, vol. iv. pp. 93, 123, 133, 143, 148, 177; Henle, Anatomie Générale, vol. i. p. 474, vol. ii. pp. 288, 289, 316; Bichat, Anatomie Générale, vol. i. p. 207, vol. ii. p. 444, vol. iii. pp. 310, 507, vol. iv. pp. 281, 399, 400, 504; Bichat sur la Vie, pp. 80, 81, 234, 235; Phillips on Scrofula, p. 9; Feuchtersleben's Medical Psychology, pp. 143–145; Œuvres de Fontenelle, Paris, 1766, vol. v. p. 110; Cullen's Works, Edinb. 1827, vol. i. pp. 214–221; Cabanis, Rapports du Physique et du Moral, pp. 76–83, 229–261, 520–533; Noble on the Brain, pp. 370–376; Combe's North America, vol. i. pp. 126–128. Latterly, attention has been paid to the chemistry of the blood as it varies in the various temperaments; and this seems a more satisfactory method than the old plan of merely describing the obvious symptoms of the temperament. Clark on Animal Physiology, in Fourth Report of the British Association, p. 126; Simon's Animal Chemistry, vol. i. p. 236; Wagner's Physiology, p. 262.