7-1 (i NOTES 



K. Akad. d. Wiss. in Wien, 58, 1908, and Warwara Polowzow : Methodologisches z. 

 Problem d. Reizerscheinungen, Jena, 1909. 



The psychology or psychobiology of plants recently developed on Lamarckian 

 lines by Pauly, France, Wagner and others, involves a logical fallacy ; for it is one 

 thing to admit the possibility of a psychical aspect of animal and vegetable life, 

 but quite another to suggest 'that the innumerable physiological and morphological 

 adaptations of organisms, and all their self- regulating processes, are purposeful, in 

 the sense in which this term is applied to the actions of an intelligent being. 



280. Noll : Naturw. Rundschau, 1888. Id. Das Sinnesleben d. Pflanze (Lecture 

 at the Jahresfest d. Senck. Ges. in Frankfurt a. M., 1896). 



281. Cf. G. Haberlandt : I.e. [274], and the literature there cited. 



282. Pfeffer : Unters. Tub. 1, 1888. G. Haberlandt : I.e. [274], pp. 126 sqq. 

 Borzi : Contrib. alia Biologia vegetale, 3, 1903. 



283. Fitting (P.J. 38, 1903) has recently found, that the supposedly insensitive 

 dorsal surface of Cucurbitaceous (and other dorsi ventral) tendrils is sensitive to contact ; 

 stimulation of this side does not lead to curvature, but prevents curvature from being 

 induced by stimulation of the ventral surface. Fitting believes that both surfaces 

 possess the same kind of contact irritability. If this view is correct, it would seem 

 rather strange that tactile pits are generally conhned to the ventral surface ; indeed, 

 this fact might be adduced as an argument against the perceptive function of the 

 pits, were it not that Fitting himself (I.e. p. 560) points out that, in the case of 

 Cucurbitaceous tendrils, stimulation of the dorsal side often only diminishes the 

 curvature induced by stimulation of the ventral side, a result which suggests that 

 this surface is the less sensitive of the two. Moreover, Pfeffer has found tactile 

 pits on the dorsal side of the tendrils in Bryonia, and it is probable that the same 

 state of things prevails in other Cucurbitaceae. 



284. Ch. Darwin : I.e. [277]. Pfeffer : I.e. [282]. G. Haberlandt : I.e. [274], 

 pp. 149 sqq. 



285. Ch. Darwin : Insectivorous plants, London, 1875. Pfeffer : l.c. [282], 

 p. 543. G. Haberlandt : l.c. [274], pp. 119 sqq. 



286. G. Haberlandt : l.c. [274], pp. 17 sqq. Id. Physiol. Pflanzenanatoniie 

 (2nd ed.), 1886, p. 479. 



287. Ch. Darwin : l.c. [274]. G. Haberlandt : I.e. [274], pp. 63 sqq. (2nd ed.). 

 Von Guttenberg : Sitzb. Wien, 117, 1908. The antennae of some species of Catase- 

 tum are constructed after the pattern of tactile bristles. 



288. Unger : Anat. u. Phys. d. Ptlanzen, 1855, p. 419. Kabsch : B.Z. 1861 

 G. Haberlandt : I.e. [274], pp. 24 sqq. 



289. G. Haberlandt : l.c. [274], pp. 32 sqq. 



290. G. Haberlandt : l.c. [274], pp. 154 sqq. 



291. G. Haberlandt : l.c. [274], pp. 109 sqq. 



292. Morren : Nouv. Mem. Acad. Sci. Brux. 14, 1884. G. Haberlandt : l.c. 

 [274], pp. 47 sqq. 



293. Ch. Darwin : I.e. L274J. G. Haberlandt : l.c. [274], pp. 71 sqq. 



