June, 1920] PHYSIOLOGY 41 o 



PROTOPLASM, MOTILITY 



2823. KUSTBR, [Rev. of: Die Kultur der Gegenwart, ihre Entwicklung und ihre Ziele. 

 (Present day knowledge, its development and object.) Berausgt^g. v. i'. Hinneberg. III. 

 Teil (Mathcui.it ik, NaturwiSBenschaften, Medizin.) 1. Abtrilung: Organische Naturwis- 

 senschaftcn. I'nter Leitung von K. v. Wettstein. III. Hand: Physiologic und Okolgie. I. 

 Botaniscber Teil. 1'nter Uedaktion von G. ilalicrlainlt . iVarbeitet von I'. Czapek, II. v. Gut- 

 tenberg, E. Baur. Mit. 119 Abbild. im Text. 338 s. B. G. Teubner: Leipzig and Berlin, 

 1917.] Zeitachr. Allg. Physiol. Referate 18': 24. 1918.— From the review it appears that 

 after a short introduction to plant physiology by Czapek the physiology and ecology of plants 

 is treated in four chapters, Czapek discussing the nutrition of plants (p. 11-125), v. Gdttkn*- 

 berq treating of growth and development (p. 120-152), as well as plant movements (p. I 

 280), and E. Baur taking up the physiology of reproduction in the plant kingdom (p. 281- 

 329). All sections are treated as well as the nature of the work allows. However, Czapek's 

 discussion of the nutrition of plants is considered the best, especially the section in which 

 protoplasm, colloids, turgor and osmotic pressure, semipermeability and plasmolysis, ionic 

 and molecular reactions, enzymes and poisons are considered. Many points of the most 

 recent investigations arc included in v. Guttenbeiig's treatment. Baur's discussion of the 

 ecology of reproduction is quite exhaustive. — William J. Robbins. 



2824. Kuster, E. Uber Vitalfarbung der Pflanzenzellen. I. [Vital staining of plant 

 cells.] Zeitschr. Wiss. Mikrosk. 35: 95-100. 1919. — Non-transpiring organs or portions of 

 organs of plants of normal turgescence can be stained vitally with acid colors. The trans- 

 piration stream serves to bring the stain into the neighborhood but is not regarded as instru- 

 mental in facilitating the exit of particles from the vessels into the parenchyma. — H. G. 

 Barbour. 



DIFFUSION, PERMEABILITY 



2825. Hibino, S. [Rev. of: Heusser, K. Neue vergleichende Permeabilitatsmessungen 

 zur Kenntnisse der osmotischen Verhaltnisse der Pflanzenzelle in kranken Zustande. (New 

 comparative measurements of permeability to ascertain the osmotic relations of diseased plant 

 cells.) Vierteljahrsschr. Naturforsch. Ges. Zurich 62: 565-589. 1917.] Bot. Mag. Tokyo 

 33 : 135-138. 1919. 



2826. Hibino, S. [Rev. of: Trondle, A. Der Einfluss des Lichtes auf die Permeabilit&t 

 der Plasmahaut und die Methode der Permeabilitats-Koeffizienten. (The influence of light on 

 the permeability of the plasma-membrane, etc.) Vierteljahrsschr. Naturforsch. Ges. Zuricb 

 63:187-213. 1918.] Bot. Mag. Tokyo 33 : 138-140. 1919. 



WATER RELATIONS 



2827. Bates, C. G. A new evaporimeter for use in forest studies. Monthly Weather Rev. 

 47: 283-294. 6 fig. I919.-See Bot. Absts. 4, Entry 178. 



2828. Matstjshima, Taneyoshi. Kirieda no kyiisui ni tsuite. Untersuchungen iiber die 

 Wasseraufname bei abgeschnittenen Zweigen. [Studies on intake of water by cut branches.] 

 [Title in Japanese and German, text in Japanese.] Bot. Mag. Tokyo 33: 65-72. 1919. — The 

 author studied duration of water absorption in cut branches of plants of 60 species common 

 in Japan, selected from 31 families. The cut ends were placed under water while the leaves 

 remained in air. The duration of water intake was greater for plants with thick, evergreen 

 leaves such as Pinus and Fotsia than for those with thin, broad leaves. Branches cut obliquely 

 absorbed more rapidly than did those cut transversely, this being probably due to 

 the larger surface in contact with the water in the former case. When resin, mucilage, latex 

 or gum was present the leaves withered very quickly, since these substances hinder the en- 

 trance of water into the vesssels. In such cases the bvirning of the cut surface made the 

 leaves remain fresh somewhat longer, because of the carbonization of the resin, etc.. and the 

 prevention of the development of microorganisms at the cut surface. — K. Morita. 



