137 Cf. (int. al.) de Vries, H., Matûˋriaux pour la connaissance de lãinfluence de la tempûˋrature sur les plantes, Arch. Nûˋerl. V, 385ã401, 1870. KûÑppen, WûÊrme und Pflanzenwachstum, Bull. Soc. Imp. Nat. Moscou. XLIII, pp. 41ã110, 1870.
138 Blackman, F. F., Ann. of Botany, XIX, p. 281, 1905.
139 For various instances of a ãtemperature coefficientã in physiological processes, see Kanitz, Zeitschr. f. Elektrochemie, 1907, p. 707; Biol. Centralbl. XXVII, p. 11, 1907; Hertzog, R. O., Temperatureinfluss auf die EntôÙwickôÙlungsôÙgeschwindôÙigôÙkeit der Organismen, Zeitschr. f. ElektroôÙchemie, XI, p 820, 1905; Krogh, Quantitative Relation between Temperature and Standard Metabolism, Int. Zeitschr. f. physik.-chem. Biologie, I, p. 491, 1914; Pû¥tter, A., Ueber TemôÙperôÙaturôÙkoefôÙficienten, Zeitschr. f. allgem. Physiol. XVI, p. 574, 1914. Also Cohen, Physical Chemistry for Physicians and Biologists (English edition), 1903; Pike, F. H., and Scott. E. L., The Regulation of the Physico-chemical Condition of the Organism, American Naturalist, Jan. 1915, and various papers quoted therein.
140 Cf. Errera, L., LãOptimum, 1896 (Rec. dãOeuvres, Physiol. gûˋnûˋrale, pp. 338ã368, 1910); Sachs, Physiologie d. Pflanzen, 1882, p. 233; Pfeffer, Pflanzenphysiologie, ii, p. 78, 1904; and cf. Jost, Ueber die ReactionsôÙgeschwinôÙdigôÙkeit im Organismus, Biol. Centralbl. XXVI, pp. 225ã244, 1906.
141 After KûÑppen, Bull. Soc. Nat. Moscou, XLIII, pp. 41ã110, 1871.
142 Botany, p. 387.
143 Leitch, I., Some Experiments on the Influence of Temperature on the Rate of Growth in Pisum sativum, Ann. of Botany, XXX, pp. 25ã46, 1916. (Cf. especially Table III, p. 45.)
144 Blackman, F. F., Presidential Address in Botany, Brit. Ass. Dublin, 1908.
145 Rec. de lãInst. Bot. de Bruxelles, VI, 1906.
146 Hertwig, O., Einfluss der Temperatur auf die Entwicklung von Rana fusca und R. esculenta, Arch. f. mikrosk. Anat. LI, p. 319, 1898. Cf. also Bialaszewicz, K., BeitrûÊge z. Kenntniss d. WachsthumsvorgûÊnge bei Amphibienembryonen, Bull. Acad. Sci. de Cracovie, p. 783, 1908; Abstr. in Arch. f. Entwicklungsmech. XXVIII, p. 160, 1909.