(149) 
Traverso, G. B. Cenni su [‘industria degli anticrittogamici e degli insetticidi in Italia. 
(Boll. mens. Inform. e Notizie Roma Anno II, Nr. 5/6 [1921], p. 51-63.) 
Valle Zeno, R. del. Sugar cane matizado or yellow spot. (La Enfermedad del 
Matijado o Manchas Amarillas de la Cana de Azucar. — New York 1919, 
16 pp., 2 Pis.) 
Valleau, W. D. Overcoming root rot by breeding. (Science N. Ser. LIII [1921}, 
p- 345.) 
Veve, R. The eradication of sugar cane mosaic in Fajardo. (Porto Rico Dept. Agric. 
and Labor. Stat. Circ. XXXIHI [1920], p. 52-55.) 
Wahl, C. von. Der Feuerbrand, eine amerikanische Obstbaumkrankheit. (Flugbl. 
d. Hauptst. f. Pflanzenschutz in Augustenberg-Baden, Nr. 6 [1916].) 
Waldron, L. R. The inheritance of rust resistance in a family derived from a cross 
between durum and common wheat. (North Dakota Stat. Bull. CXLVII [1921], 
p. 3—24, 2 Figs.) & 
Walker, J. C. Experiments upon tormaldehyde-drip control of onion smut.: Phyto- 
pathology X [1920], p. 323-—-327.) 
— and Jones, L. R. Relation of Soil Temperature and other Factors to Onion Smut 
Infection. (Journ. Agric. Research-Washington XXII [1921], p. 235—262, 
Pl. XXV—XXVil) } 
Walster, H. L. Rust and the Weather. (Science n. Ser. LIII [1921], p. 346.) 
: ns R. Plant Diseases. (Brit. Guiana Dept. Sci. and Agric. Rept. [1918], 
a : 3 
ea, W.L. Studies in the Physiology of Parasitism. VII. Infection of Berberis 
vulgaris by Sporidia of Puccinia beseringn Kane. of Bot. XXXV [1921], 
p- 557—564.) 
BEER a disease in wheat. (New Zeal. Journ. Agric. XX [1920], p. ‚137-1483, 
Weimer, 1. Es and Harter, L. L. Respiration and Carbohydrate Changes produced 
in Sweet Potatoes by Rhizopus. Tritici. (Journ. Agric. Research-Washington 
XXI 1921, p. 627-635.) er 5 
Weir, J. R. Note on the pathological effect of Hazay trees. (Phytopathology X i 
[1920], p. 371—373.) 
Weston, Js. W. H. The occurrense of wheat downy mildew in the United States. 
(U. S. Dept. Agric. Dept.-Circ. Nr. CLXXXVI [1921], 6 pp.) 
Wilbrink, G. Sugar cane gummosis, its cause and control. (Arch. Suikerindustr, 
-Nederl. Indie XXVIII [1920], p. 13991462; 1463—1525.) ; 
Wilhelmi, J. Zur Ausgestaltung der a gs enge (Naturw. Wochenschr.. er 
 ON..F. XX [1921], p. 312—316.) Er 
"Wiltshire, S. P. The die-back of red currants. (Univ. Bristol el and Hort. Rese- Sr 
arch Stat. Ann. Rept. 1919, p. 30—33.) a 
Wolt, F. A. and Lehman, S. G. Notes on new or little known =. diseases i in a North 
Carolina in 1920. (North Carolina Stat. Rept. [1920], p. 5558.) a 
York, H. H, Late seasonal Breäueren. of aecidia of Cronartium ribicola.. nn 
‚pathology x [1920], p. 111.).,, \ rt Er 
Zappe, M. P. Experiments to Control the Chrysanthemum Gall ER Paan 
ll. 00. 218 (Now Hawen 1910) 
celus E surinamensis 202 
| u san Bull.-no. nn 
