Note 242 — Chapter II · (continued 2)
Reading edition
Heat, moisture, and consequent rapid decomposition of vegetable matter, are certainly among the causes of this; and to them may perhaps be added the electrical state of the atmosphere in the tropics. Compare Holland's Medical Notes, p. 477; M'William's Medical Expedition to the Niger, pp. 157, 185; Simon's Pathology, p. 269; Forry's Climate and its Endemic Influences, p. 158. M. Lepelletier says, rather vaguely (Physiologie Médicale, vol. iv. p. 527), that the temperate zones are ‘favorables à l'exercice complet et régulier des phénomènes vitaux.’