56 Botanisches Centralblatt. 



Hesselman, H, 1919. Om törskatesvampens spridning. (Flygbl. Stat. 



Skogsf. Anst. 1919. 15. 8 pp. 7 f.) 

 Holbert, J. R., J. F. Trost and G. N. Hoffer. 1919. Wheat scabs as 



afifected by Systems of rotation. (Phytopathology. IX. p. 45—47.; 

 Jenkins, A. E. 1918. Brown canker of roses, caused by Diaporthe 



umbrina. (Journ. agr. Res. XV. p. 593-599. 3 pl.) 

 Johnston, J. R. e S. C. Brunner. 1918. En fermedades des naranjo y 

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 Lee, H. Atherton 1918. Further data on the susceptibility of Rutaceous 



plants to Citruscanker. (Journ. agr. Res. XV. 661—665. 4 pl.) 

 Lind, J. 1917. Aplanobacter Rathayi, ein Schädling von Dactylis 



glomerata in Dänemark. (Intern, agr.-techn. Rundschau. VIII. 



p. 976-977.) 

 Noweü, W. 1918. Diseases of economic plants. (W. Indian Bull. XVII. 



p. 96—102.) 

 Osner, G. A. 1918. Additions to the list of plant diseases of econo- 

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p. 145—147.) 

 Palm, B. 1918. Beschrijving van eenige wortelziekten. (Med. Proef- 



stat. Thee Batavia. 1918. 61. p. 27—33.) 

 Palm, B. 1918. De wortelziekten van de theeplant. (Med. Proefstat. 



Thee Batavia. 1918. 61. p, 18—26.) 

 Pethybridge, G. H. und H. A. Lafferty. 1917. Ftisarium coeruleum, der 



Erreger der Trockenfäule der Kartoffelknollen auf den britischen 



Inseln. (Intern, agr.-techn. Rundschau. VIII. p. 1043—1044.) 

 Plerce, Roy G. 1918. Additional list of State and National quarantines 



against the white pine blister rust. (Phytopathology. VIII. p. 484 — 



486.) [Supplementary to a list published in the same Journal — 



vol. 7. p. 319—321. Aug. 1917. — Trelease.] 

 Bankin, W. H. 1918. Manual of tree diseases. (New York, Macmilian 



Cy. 1918, XX, 398 pp. 70 f. Price $ 2.50.) 

 Reddiek, D. and V. B. Stewart. 1918. Varieties of beans suscepcible to 



mosaic. (Phytopathology. VIII. p. 530—534.) 

 Reinking, 0. A. 1918. Philippine economic-plant diseases. (Philippine 



Journ. Sc. XIII. A. p. 165-274. ill.) 

 Reynolds, E. S. 1918. Two tomato diseases. (Phytopathology. VIII. p. 



535—542. 2 f.) 

 Roberts, J. W. and L. Pierce. 1918. Apple bitter rot and its control. 



(Farmers' BuU. U. S. Dep. Agr. 1918. 938.) [Referring to Glome- 



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 Rosenbaum, J. 1918. The origin and spread of tomato fruit rots in 



transit. (Phytopathology. VIII. p. 572—580. 1 f. 1 pl.) 

 Sasscer, E, R. and H. F. Dietz. 1918. Fumigation of Cattleya Orchids 



with hj^drocyanic-acid gas. (Journ. agr. Res. XV. p. 263 — 268. 2 pl.) 

 Seaver, F. J. 1918. The black locust tree and its insect enemies. 



(Journ. New York bot. Gard. XIX. p. 100-104. 1 pl.) 

 Shear, C. L. 1918. Pathological problems in the distribution of peri- 



shable plant products. (Brooklyn bot. Gard. Mem. I. p. 415 — 



422. 3 pl.) 

 Smith, E. F. 1918. The relations of crown-gall to other overgrowths 



in plants. (Brooklyn bot. Gard. Mem. I. p. 448—453.) 

 Stevens. H. E. 1918. Florida Citrus diseases. (Bull. Florida agr. Exp. 



Stat. 1918. 150. 110 pp. ill.) 

 Stevens, F. L., W. A. Ruth and C. S. Spooner. 1918. Pear blight vvind- 



borne. (Science. N. S. XLVIII. p. 449-450.) 



