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Headlee, T. J., Cook, T. and Farley, A. J. Spray Calendar for Apples and Quinces, 
(New Jersey Agric. Experim. Stat. Circular 116 (1920), 2pp. 3 Figs.) 
Heald, F. D. Brown rot of stone fruits. (Washington Agriculturalist VIII [1915], 
p- 1—6.) 
— Some new facts concerning wheat smut. (Proceed. Washington State Grain 
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— Preliminary note on leaf invasion by Bacillus amylovorus. (Bull. Washington 
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Heald, F. D. and Woolman, H. M. Bunt or stinking smut of wheat. (Ibidem Bull. 
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— . Potato diseases. (Washington Agric. Exp. Stat. Popl. Bull. 106 [1917], p. 17—94, 
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Hemmi, Takewo. On the Die-back Disease of Paulownia tomentosa caused by a new 
Species of Valsa. (Tokyo Bot. Mag. XXX [1916], p. 304—315, 4 Fig.) 
Henderson, M. P. The black-leg disease of cabbage caused by Phoma lingam (Tode) 
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Hesler, L. R. Apple cankers and their control. (Cornell Agric. Experim. Stat. Circ. 
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— Black rot, leaf spot, and canker of pomaceous fruits. (Cornell Agric. Exp. Stat. 
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Hesler, Lex R. and Whetzel, Herbert Riee. Manual of fruit diseases. (New York 1917, 
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Higgins, B. B. Plum wilt, its nature and causes. (Georgia Agric. Experim. Stat. 
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— Gum formation with special reference. to cankers and decays of woody plants. 
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Hodgson, R. W. Citrus blast — a new bacterial disease. (Calif. State Comm. Hort. 
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— A sterigmatocystis smut of figs. (Phytopathology VIII [1918], p. 545-546.) 
— Black smut of figs. (Month. Bull. State Comm. Hort. Calif. VIL[1918], p. 188—189, 
28 Figs.) ö 
. Hoffer, G. N. An aecidium on redclover, Trifolium pratense L. (Proceed. Indiana 
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Holfer. G. N. and Holbert, J. R. Results of corn disease investigations. (Science 
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— — Selection of disease-free seed corn, (Purdue Agric. Experim. Stat. Bull. no. 224 
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Holway, E. W. D. Infected grass seeds and subsequent rust development. (Phyto- 
pathology VIII [1918], p. 169.) 
Horne, W.T. Oak-fungus disease, oak-root fungus disease, fungus root-rot, toadstool 
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Houser, J. S. Recent tests of materials to control San Jose scale. (Monthly Bull: 
Ohio Agric. Experim. Stat. V [1920], p. 49-51.) \ 
Howard, A. Influence des facteurs pedologiques sur la resist aux maladi (Ann: 
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Howitt, ü. E. Phytophthora iniestans, causing ERROR of tomatoes. (Ehytn- ; 
pathology va BRAD: pP: u + 
