24 Botanisches Centralblatt. 



Norton, J. B. S. 1917. Peach yellows and peach rosette. (Monthly 

 Bull. State Com. Hort. Calif. VI. p. 282—286. 3 f.) 



Ong, E. R. de 1917. Hydrocyanic-acid gas as a soil fumigant. ( Journ. 

 agr. Res. XI. p. 421—436. 1 pl.) 



Rands, R. D. 1917. Early blight of potato and related plants. (Res. 

 Bull. Wisconsin agr. Exp. Stat. 1917. 42). [Referring to Alternaria 

 Solani. — Trelease.] 



Rant, A. 1917. The white root-fungus of Cinchona. (Rec. Trav. bot. 

 neerland. XIV. p. 143—148. 1 f. 1 pl.) 



Rose, D. H. 1917. Blister spot of apples and its relation to a disease 

 of apple bark. (Phytopathology. VII. p. 198- 208. 3 f.) 



Rudolph, B. A. 1917. A new leaf-spot disease of cherries. (Phytopa- 

 thology. VII. p. 188—197. 3 f.) 



Schaffnit, E. und G. Voss. 1917. Versuche zur Bekämpfung des Kartoffel- 

 krebses im Jahre 1916. (Zschr. f. Pflanzenkr. XXVII. p. 339-346.) 



Schultze, P. 1917. Die Galle von Rhopalomyia ptarmicae Vallot. 

 (Sitzber. Ges. natf. Freunde Berlin. 1916 [1917]. p. 381-385. 5 F.) 



Spaulding, P. 1917. Needle rust on Pinus resinosa. (Phytopathology. 

 VII. p. 225.) 



Stahel, G. 1917. De zeefvatenziekte (Phloemnecrose) van de Liberia- 

 koffie in Suriname. (Koffiewortelziekte). (Med. Dep. Landb. Suri- 

 name. 1917. 12. 2 pp.) 



Stanford, E. E. and F. A. Wolf. 1917. Studies in Bacterium solanacea- 

 rum. (Phytopathology. VII. p. 155 — 165. 1 f.) 



Stevens, N. E. and L. A. Hawkins. 1917. Some changes produced in 

 strawberry fruits by Rhizopus nigricans. (Phytopathology. VII. p. 

 178—184.) 



Stevens, N. E. and R. B. Wilcox. 1917. Rhizopus rot of strawberries 

 in transit. (Bull. U. S. Dep. Agr. 1917. 531. p. 1—22. 1 f.) 



Stewart, F. C. 1917. Witches-brooms on hickory trees. (Phytopatho- 

 logy. VII. p. 185-187.) 



Tabor, R. J. and K. Barratt. 1917. On a disease of the beach caused 

 by Bulgaria polymorpha, Welt. (Ann. appl. Biol. IV. p. 20— 27. 1 pl.) 



Tisdale, W. H. 1917. Flaxwilt: a study of the nature and inheritance. 

 (Journ. agr. Res. XI. p. 573—605. 8 f. 3 pl.) 



Trägärdh, I. 1916/7. Undersökningar över gran- och tallkottarnas 

 skadeinsekter. [Investigations into the insects injurious to the 

 spruce and pine cones]. (Medd. Statens Skogsförsöksanst. XIII— 

 XIV. p. 1141 — 1204. ill.) 



Tijmstra Bz., S. 1917. Vergelijkend onderzoek van eenige slijmzieke 

 en niet-slijmzieke gronden. [Vergleichende Untersuchung einiger 

 schleimkranker und nicht-schleimkranker Tabakböden]. (Bull. Deli 

 Proefstat. Medan, Sumatra. 1917. 9. p. 1—41. Holl. u. Deutsch.) 



Vouk, V. 1917. Medljika na ogrozdu (Sphaerotheca mors uvae Berk. 

 et Curt.) u Hrvatskoj. [Stachelbeerpest in Kroatien]. (Gospokarska 

 Smotra 1917.) 



Weir, J. R. 1917. Note on Xylaria polymorpha and X. digitata. (Phy- 

 topathology. VII. p. 223—224.) 



Weir, J. R. 1917. Sparassis radicata, an undescribed fungus on the 

 roots of conifers. (Phytopathology. VII. p. 166—177. 5 f.) 



Weir, J. R. and E. E. Hubert. 1917. Recent cultures of forest tree 

 rusts. (Phytopathology. VII. p. 106— 109.) 



Weiss, J. E, 1917. Herbarium pathologicum. Lfrg. 3 u. 4. (Leipzig, 

 Th. O. Weigel. 1917.) 



Wester, P. J. 1917. Notes on Citrus canker affection at the Lamao 

 Experiment Station. (Philippine agr. Rev. X. p. 253—260.) 



