38 Botanisches Centralblatt. 



Feit, E. P. 1918. Key to American insect galls. (Bull. New York 



State Mus. 1917 [1918]. 200. 310 pp. 250 f. 16 pl.) 

 O'Gara, P. J. 1918. The white-spot disease of alfalfa. (Science. N. S. 



XLVIII. p. 299—301.) 

 Garman, P. 1917. Tarsonemus pallidus, eine schädliche Milbe auf 



Pelargonium und anderen Pflanzen in Maryland, (Intern, agr. 



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 Gertz, 0. 1918. Skänes Zoocecidier. Ett bidrag tili kännedomen om 



Sveriges gallbildande flora och fauna, (Lunds Univ. Arsskr. N. F. 



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 Goodspeed, T. H. a. o. 1918. Notes on the efifects of illuminating gas 



and its constituents in causing abscission of flowers in Nicotiana 



and Citrus. (Univ. California Publ. Bot, V. p. 439—450.) 

 GOssow, H. T. 1918. Drowth injury to Mc Intosh apple. (Phytopatho- 



logy. VIII. p. 490—491. 1 f.) 

 GQssow, H. T. 1918. Observations on obscure potato troubles. (Phyto- 



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 GQssow, H. T. 1917. The occurrence of Colletotrichum cereale. 



Dothichiza populea, and Leptosphaeria Napi in Canada. (Phyto- 



pathology. VII. p. 450.) 

 Hartley, C. a. o. 1918. Seedling diseases of Conifers. (Journ. agr. 



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 Henderson, M. F. 1918. The black-leg disease of cabbage caused bj»- 



Phoma lingam (Tode) Desmaz, (Phytopathology. VIII. p. 379— 



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 Hodgson, R. W. 1918. A Sterigmatocystis Smut of figs. (Phytopatho- 

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 Hoffer, G. N. 1917. An Aecium on red clover, Trifolium pratense L. 



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of the Citrus species and varieties at Lamao, (Philippine agr. Rev. 



XI. p. 200—206. 7 pl.) 

 Lyman, G. R. 1918. The relation of phytopathologists to plant disease 



survey work. (Phytopathology. VIII. p. 219—228.) 

 Mackie, W. W. 1918. A possible new fungicide [lime-sulphur] for 



wheat and barly Smut. (Science. N. S. XLVIII. p. 515-516.) 

 Mae Millan. H. G. 1918. An epidemic of Com Smut foUowing Lail. 



(Phytopathology. VIII. p. 584—585.) 

 He CuUoeh, L. M. 1918. A morphological and cultural note on 



the organism [Aplanobacter Stewarti n. comb.. = Pseudomonas 



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 Uetcalf, H. 1918. The problem of the imported plant disease as 



ülustrated by the white pine blister rust. (Brooklyn bot. Card. 



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 Osner, G. A. 1917. Additions to the list of plant diseases of economic 



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destroying fungi. (Phytopathology. VII. p. 46—48.) 



