480 W. Wendler: Physikalische Physiologie 1921— 1922 [14 



Bäumen vorhanden ist, oline daß Bluten bemerkbar wird, da es an aus- 

 reichendem Wasser fehlt. Autorreferat. 



Siehe auch Nr. 3, 28, 88 und „Chemische Physiologie 1921/22", Nr. 11, 

 255, 261, 433. 



2. Spaltöffnungen 



132. LoJtlield, J. V. Gl. Transpiration and stomatal movement 

 in Cereus giganteiis and their correlation with variations in stem 

 diameter. (Carnegie Inst. Washington, Year Book 21, 1922, p. 339—340.) 



133. Lofttield, J. V. G. The behaviour of stomata. (Carnegie 

 Inst. Washington 1921, Publ. 314, 103 pp., 16 Taf., 54 Textfig.) — Kef. in 

 Bot. Ctrbl., N. F. I, 1922, p. 420—421. 



134. Rhea, Marg'aret W. Stomata and hydathodes in Campanula 

 rotundifolia L. and their relation to environment. (New Phytologist 

 XX, 1921, p. 56—72, 6 Textfig.) — Kef. in Bot. Ctrbl., N. F. I, 1922, 

 p. 164. 



135. Wober, F. Zur Physiologie thylloider Verstoj)f ungen von 

 Spaltöffnungen. (Ber. Deutsch. Bot. Ges. 38, 1921, p. 309—312.) 



e) Wasserbewegung 



136. Aitken, R. D. The Water Relations of the Pine (Pimis 

 pinasier) and the Silver Tree (Leiicadcndron argenteum). (Transact. Roy. 

 See. S. Afr. 10, 1921, p. 5—19, mit 1 Fig.) — Ref. in Bot. Ctrbl., N. F. 3 

 1924, p. 425. 



137. Andre, G. Sur la filtration des sucs vegetaux. (C. R. Acad. 

 Sei. Paris 175, 1922, p. 286—289.) — Ref. in Bot. Ctrbl., N. F. II, 1923, 

 p. 203. 



138. Dauphine, A. Production experimentale de l'acceleration 

 dans l'evohition de l'appareil conducteur. (C. R. Acad. Sei. Paris 

 CLXXIII, 1921, p. 1111—1113, 3 Textfig.) — Ref. in Bot. Ctrbl., N. F. I, 

 1922, p. 296. 



139. Holmes, M. G. A contribution to the study of water- 

 conductivity in Sycamore wood. (Ann. of Bot. XXXV, 1921, p. 251 

 bis 268, mit 15 Textfig.) — Die Zusammenfassung über die an Acer Pseudo- 

 platanus ausgeführten Versuche lautet: ,,In this paper are described the results 

 of an investigation into the Constitution of the wood of yoxmg Sycamore 

 plants, with special reference to its efficiency for the conduction of water. 

 The work is a continuation of that begun on stool shoots of Hazel and Ash, 

 but the observations are not confined to first-year wood. The writer takes 

 this opportunity of correcting a mistake which apijears in some of the figures 

 given in the earlier papers. With regard to wood of the second and outer 

 anniial rings, it is pointed out that there is less Variation in the specific con- 

 ductivity for water than in the first-year wood; the vessels are wider, but 

 less abundant, and this tends to make the figures for specific conductivity 

 become somewhat lower. In general the specific conductivity in the wood 

 of young Sycamore plants, estimated in its transverse aspect, is near that 

 found for Hazel stool shoots, and higher than that for Ash." 



