Neue Litteratur. 197 



I— IL (Amer. Journ. Physiol. XXIX. p. 372—397. XXX. p. 1 — 17.) 



Livingston. B. E. 1912. The choosiiig of a problem for research in 

 plant ph.vsiolog}'. (Plant World. XV. p. 73—82.) 



Nestler, A. 1913. Der Giftsumach und seine Wirkungen. (Die Um- 

 schau. XVII. p. 460—463. ill. 



Osterhout, W. J. V. 1912. The permeability of protoplasm to ions and 

 the theory of aniagonism. Science. N. S. XXXV. p. 112—115.) 



Petrow, G. G. 1913. Ueber die Stickstoffassimilation der Pflanzen aus 

 Tyrosin, Leucin und Pepton. (Ann. Inst. agr. Moscou. XIX. p. 

 163—183. 4 A. mit deutsch. Res.) 



YII. Palaeontologie. 

 Cf. X. Hofmann. 



Berry, E. W. 1914. Two new tertiary species of Trapa. (Torreya. 



XIV. p. 105-108. 5 f.) 

 Bezier, T. 1914. Sur l'existence d'une florule carbonifere (westpha- 



lienne?) ä Melesse (lUe et-Vilaine). (C. R. Ac Sc Paris. CLVIII. p. 



2021—2022.) 

 Derby, 0. Ä. 1914. Observations on the crown structure of Psaronius 



Braziliensis. (Amer. Journ. Sc. 4. XXXVllI. p. 149—156. 3 f.) 

 Halle, Th. G. 1913. Some remarks on the Classification of fossil 



plants. (Geol. Foren. Förhandl. 1913. p. 367—382. t. 9 and 10.) 

 Jongmans, W. 1914. Fossilium catalogus. IL Plantae. Pars 4. Equise- 



tales IIL (Berlin, W. Junk. 1914. 8''.) 

 Meyer, F. 1913. Beiträge zur Kenntnis der Tertiärflora Schlesiens. 



[Diss.]. (Breslau, 1^13. 50 pp.) 

 Potonie, R. 1913. Ueber Blattepidermen einiger fossilen Pteridosper- 



men. (Sitzber. natf. Freunde. Berlin 1913.''p. 453-461. 14 F.) 



YIII. Microscopie. 



IX. Cryptogamen im Allgemeineii. 



(Vacant). 



X. Algae. 



Acton, E. 1914. Observations on the cytology of the Chroococcaceae. 



(Ann. of Bot. XX\ III. p. 433—454. 2 pl.) 

 Boyer, C. S. 1914. A new diatom. (Proc. Ac. nat. Sc. Philadelphia. 



LXVI. p. 219—221. 1 pl. 

 Chemin, E. 1914. Les algues marines en projections. lUnion des Na- 



turalistes. IV. p. 32-34.) 

 Collins, F. S. 1914. Drifting algae. (Rhodora. XVI. p. 1—5.) 

 Desroche, P. 1914. Observations morphologiques sur les Volvocacees. 



(Ass. franf. Avanc. Sc. Sess. de Tunis 1913. [1914J. p. 307-312. 2 f.) 

 Dodge, B 0. 1914. The morphological relationships of the Florideae 



and the Ascomycetes. (Bull. Torrey bot. Club. XLI. p. 157—202. 13 f.) 

 Elenkin, A. A. 1914. Ueber die thermophilen Algenformationen. 



Bull. Jard. imp. bot. Pierre le Grand. XIV. p. 62—110. Russisch 



u. deutsch.) 

 Esmarch, F. 1914. Untersuchungen über die Verbreitung der Cyano- 



phyceen auf und in verschiedenen Böden. [Diss. Kiel]. (Dresden, 



Heinrich. 1914. 8^. 52 pp.) 

 Fester, G. L. 1914. Indications regarding the source of combined ni- 



trogen for Ulva lactuca (Ann. Missouri bot. Gard. L p. 229- 235.) 

 Fritsch, F. E. 1914. Contributions to our knowledge of the freshwa- 



ter Algae ol Africa. Ann. Biol. lac. VII. p. 40-59. 1 pl.j 



