Neue Litteratur. 123 



21. Aufl. (Würzburg, Leipzig, C. Kabitzsch. 1918. 8°. VI, 143 pp.) 

 Agulhon, H. et R. Legroux. 1918. Contribution ä l'etude des vitamines 



utilisables ä la culture des microoreanismes. Application au ba- 



cille de l'influenza (B. de Pfeiffer). (C. R. Ac. Sc. Paris. CLXVII. 



p. 597— 600.) 

 Buchanan, R. E. 1918. Bacterial phylogeny as indicated by modern 



types. (Amer. Nat. LH. p. 233—246. 3 f.) 

 Fred, E. B. and A. Davenport. 1918. Influence of reaction on nitrogen- 



assimilating bacteria. (Journ. agr. Res. XIV. p. 317 — 336.) 

 Gainey, P. L. 1918. Soil reaction and the growth of Azotobacter. [P. 



p.]. (Journ. agr. Res. XIV. p. 265—271.) 

 Green, H. H. f918. Description of a bacterium which oxidizes arse- 



nite to arsenate, and of one which reduces arsenate to arsenite, 



isolated from a cattle-dipping tank. [Abstract]. (S. afric. Journ. Sc. 



XIV. p. 465-467.) 

 Gully, E. 1916. Das Nitritzerstörungs- und Nitritbildungsvermögen 



der Moorböden. (Landw. Jahrb. Bayern. VI. p. 1 — 81.) 

 Hutchinson, H. B. and A. C. Thaysen. 1918. The non-persistence of 



bacteriotoxins in the soil. (Journ. agr. Sc. IX. p. 43—62.) 

 Jacoby, M. 1918. Ueber Bakterien-Katalase. (Biochem. Zschr. LXXXIX. 



p. 350—354.) 

 Lipman, C. B. and D. D. Waynick. 1918. A bacteriological study of 



the soil of Logo;erhead Key, Tortugas, Florida. (Proc. nation. Ac. 



Sc. U. S. A. IV. p. 232—234.) 

 Meier, W. 1918. Untersuchungen über zweckmässige Kultivierungs- 

 methoden für die Bakterien der frischermolkenen Kuhmilch. 



(Cbl. Bakt. 2. XLVIII. p. 433-459.) 

 Revis, C. 1916. Variation in Bacterium coli. (Proc. r. Soc. London. 



B. LXXXVI. p. 373-376.) 

 Ruzicka, V. 1916/17. Kausal-analytische Untersuchungen über die 



Herkunft des Chromatins. I. Versuche über die Herkunft des Bak- 



terienchromatins. (Arch. Entw.-Mech. Organ. XLII. p. 517— 563. 1 T.) 



XV. Lichenes. 

 Cf. XVI. B©rgesen and Raunkiaer. 



Leteiiier, A. 1Ö17. Etüde de quelques gonidies de Hchens. (These, 



Geneve. 1917.) 

 Lettau, G. 1918. Schweizer Flechten. 1. (Hedwigia. LX. p. 84—128.) 

 Mutto, E. und G. Pollacci. 1917. Neuere Untersuchungen über die 



morphologischen Veränderungen durch den Nährboden bei Conio- 



thvrium tirolense und Pl^llosticta pirina. (Int. agr.-techn. Rurdsch. 



VIII. p. 834-835.) 



XVI. Bryophyten. 



Andrews, A. Le Rov 1918. A collection of mosses from North Caro- 

 lina. (Bryologist. XXI. p. 61—67. 1 f.) 



Borgesen, F. and C. Raunkiaer. 1918. Mosses and lichens collected in 

 the former Danish West Indies. (Dansk bot. Ark. IL p. 1 — 18.) 



Emig, W. H. 1918. Octodiceras julianum Brid. var. Ohioense, new 

 variety. (Bryologist. XXI. p. 60-61.) 



Evans, A. W^ 1918. Noteworthy Lejeuneae from Florida. (Amer. 

 Journ. Bot. V. p. 131 — 150. 5 f.) 



Lorenz, A. 1918. Notes on Radula obconica Süll. (Bryologist. XXI. p. 

 56—59. 1 f.) 



Merino, P. 1916. Contribuciön a la muscologia de la Peninsula Ibe- 

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