(72) 
Cook, T. Seedand soil Treatment for Vegetable Diseases. (New Jersey Agric. Experim. 
Stat. Circular 106 [1918], 4 Fig.) 
— and Martin, W. H. Diseases of Tomatoes. (Ibidem Circular 104 [1918], 15 pp., 
6 Fig.) < 
— and Helyar, P. J. Diseases of grains and forage crops. (New Jersey Agric. Ex- 
perim. Stat. Circular 102 [1918], 15 pp., 4 Fig.) 5 
Coons, G. H. Notes on Michigan plan diseases in 1916. (Ann. Rep. Michigan State 
Board Agric. LVI [1917], p. 310—317.) 
— Oat smut. (Ibidem -p. 308309.) 
— A Phoma disease of celery. (Ibidem p. 318.) 
— Michigan potato diseares. (Michigan Agric. Experim. Stat. Spec. Bull. no. 85 
[1918], 49 pp., 41 Fig.) 
— and Levin, E. The Septoria leaf spot disease of celery, or celery blight. (Michig. 
Agric. Experim. Stat. Special Bull. LXXVII [1916], 8pp., 9 Fig.) 
— — The Septoria leaf spot of celery or celery blight. (Michigan Agric. Experim. 
. Stat. Rep. XXIX [1916], p. 372-378, Fig. 2-9.) 
'— The relation of weather to epidemics of late blight of potato. (Ann. Rep. Michigan 
State Board Agric. LVI [1917], p. 317318.) - 
— and Nelson, R. The plant diseases of importance in the transportation of fruits 
and vegetables. (Chicago 1918, 60 pp., 98 Fig.) 
— and Levin,; E. The leaf spot disease of tomato. (Michigan Agrie. Experim. Stat. 
Spec. Bull. LXXXI [1917], 15 pp., 7 Fig.) 
Cooper, J. R. Methods of controlling blister canker. (Nebraska Agric. Experim. 
Stat. Bull. no. 161 [1917], 18 pp., 7 Pls.) 
— Studies of the etiology and control of blister canker on apple trees. (Nebraska 
Agric. Experim. Stat. Research Bull. XII [1917], 117 pp., 24 Pl.) 
Cosens, A. and Sinelair, T. A. Aeriferors tissue in Willow galls. (Bot. Gazette LXIL 
[1916], p. 210—225, PL II—IV, 5 Fig.) 
Cotton, A. D. Host Plants of Synchytrium endobioticum. (Kew Bull. [1916], 
p- 22-275) 
— Diseases of Parsnips-Studies from the Pathological Laboratory: VI. (Kew Bull. 
[1918], p. 8-21, Pl. III-IV.) i 
— Richard T. Rice Weevil (Calandra) Sitophitus Oryza. (Journ. Agric. Research 
Washington XX [1920], p. 409-422, Pl. LX.) i 
— Tamarind Pod-Borer, Sitophitus linearis (Herbst.). (Ibidem  p. 439446, 
Pl. LXI.) \ 
Crabbill, C. H. Note on apple root-rot in Virginia. (Phytopathology VI ERDRN 
p- 159—161, Fig. 1.) 
— Note on the white spot of alfalfa. (Phytopathology VI 1918), p- 91-93, Fig. 
1—2.) 
— and Thomas, H, E. Stippen and spray injury. (Ibidem p. 51-54.) 
Cunningham, G.C. Studies in clubroot. II. Disease resistance of crucifers; methods 
of combating club-root. (Vermont Agr. Exp: Stat. Bull. CLXXXV a 
p- 67—86, Pl. I—-IX.) E 
Dalbey, N. E. Corn disease caused by-Phyllachora graminis, (Paytopatholoey 2 va 
[1917], p. 55—56, 1 Fig.) 
— Phyllachora as the cause of a disease of corn, and a general consideration ofthe 
genus Phyllachora. (Transact. Illinois Acad. Sci. X [1917], p. 230—248, Fig. 3—9) 
Dana, B. F. A preliminary note on foot-rot of cereals in the Northwest. Beer : 
2. Ser. L [1919, p. ee 
