8 Botanisch Centralblatt. 



Meichers, L. E. 1915. A new alfalfa leafspot in America. (Science. N. 



S. XLII. p. 536—537.) 

 Osmun, A. V. and P. J. Anderson. 1915. Rino;-spot of cauliflower. 



(Phytopathology. V. 260—265. 4 f.) 

 Rumbold, C. 1915. Metliods of injecting trees. (Phytopathology. V. p. 



225-228. 1 pl.) 

 Schaffnit und Lüstner. 1915. Bericht über das Auftreten von Feinden 



und Krankheiten der Kulturpflanzen in der Rheimprovinz im 



Jahre 1913. (Veröffentlichung Landw. -Kammer Rheinprov. 1915. 



3. 69 pp.) 

 Shear, C. L. 1915. The need of a pure culture supply laboratorj'^ for 



phytopathology in America. (Phytopathology. V. p. 270—272.) 

 Scherbakoff, C. D. 1915. The after effect of sulfur treatment on soil. 



(Phytopathology. V. p. 219-222. 3 f.) 

 Sorauer, P. 1915. Ueber die Erkrankung der Zimmerpflanzen. (Zschr. 



f. Pflanzenkr. XXV. p. 325-335.) 

 Stahel, G. 1915. Marasmius perniciosus nov. spec, de veroorzaker 



der krullotenziekte van de cacao in Suriname. [Marasmius perni- 

 ciosus nov. spec, the cause of the krulloten-disease of cacao in 



Suriname. Marasmius perniciosus nov. spec, der Erreger der 



KrüUoten-Krankheit des Kakaos in Surinam.] (Bull. Dep. Landb. 



Suriname. 1915. 33. 27 pp., 25 pp. and 26 pp. 12 t.) 

 Thompson, M. T. 1915. An illustrated catalogue of American insect 



galls. (Nassau, New York, E. P. Feet. 1915.) 

 Westerdijk. J. 1915. De kunstmatige cultuur van plantenparasieten. 



(Hand. XV. nederl. natk. en geneesk. Congr. Amsterdam. 1915. 



p. 273—278.) 

 Wortley, E. J. The transmission of potato mosaic through the tuber. 



(Science. N. S. XLII. p. 460—461.) [Transmissibility is shown. — 



Trelease.] 



XIV. Bacteriologie. 

 Fred, E. B, and E. B. Hart. 1915. Comparative Effect of Phosphates 



and Sulphates on Soil Bacteria. (Bull. agr. Exp. Stat. Madison. 



Wisc. 1915. 32 pp. 6 f.) 

 Greig-Smith, R. 1915. A new Levangum-forming Bacterium (Bacillus 



hemiphloiae). (Proc. Linn. Soc N. S. Wales. XL. p. 174—175.) 

 H^relle, F. d' 1915. Sur le procede biologique de destruction des 



sauterelles. (C. R. Ac. Sc. Paris. CLXI. p^ 503—505.) 

 Miller, F. 1914, Ueber den Einfluss des Kalkes auf die Bodenbakterien, 



(Zschr. Gärungsphysiol. IV. p. 194—206.) 

 Mulvania, M. 1915. Observations on Azotobacter. (Science. N. S. 



XLII. p. 463—465.) 

 Walton, H. J. 1915. Azotobacter and nitrogen fixation in Indian soils. 



(Mem. Dep. Agr. India. Bact. Ser. I. p. 97—112. 5 pl.) 



XV. Lichenes. 



Hasse, H. E. 1915. Additions to the Liehen flora of Southern Cali- 

 fornia. No. 11. (Bryologist. XVIII. p. 92—94.) 



Mc Lean, R. C. 1915. The ecology of the maritime lichens at Blakene}' 

 Point, Norfolk. (Journ. of Ecol. IIL p. 129—148. ill.) 



Paulson, R. 1915. Notes on the Lichens collected by Mr. D. J. Scour- 

 field F. Z. S. during a visit to Swedish Lapland July 1913. (Essex 

 Nat. XVIII. p. 7--8.) 



XVI. Bryophyten. 



Andrews, A. Le Roy 1915. Calypogeia arguta from the Faroe Islands. 

 (Bryologist. XVIII. p. 94-95.) 



