INDEX TO AUTHORS NAMES 



4S7 



Ubisch, (!. Primary and secondary coup- 



ling. 298. 

 Ullrich, F. T. Agricultural oourse for liigh 



schools. *•_'(;(•). Trees and mil uiv-sf udy 

 is C. S. A. 502. 



Ungcr, L. J. (Hess, A. 1'., and L. J. Qnger) 

 28-17. 



Urban, J. Germination of beet seed. (Rev. 

 by Popp) 2899. 



Urk, see Van Urk. 



Uzel, H. Diseases and pests of seed-beets in 

 Bohemia, 1916-17. 2774, 2775— Sugar- 

 beet diseases, report of Phytopath. Div. 

 for sugar-beet industry in Prag. 2776. 



Vadas, E. Robinia in forestry. (Rev. by 

 Matouschck) 269S. 



Valentin, H. (Rev. of Lundborg, H.) 648. 



Valeton, Th. Zingiberaceae of Java and 

 Malaya. 1322. 



Van Ameijden, U. P. Tropisms in absence 

 of oxygen. 1246. 



Van den Hcede, A. Conifers as ornamentals 

 in France. 1558. — Cuphea in France. 

 1557. 



Van der Bijl, P. A. Paw-paw rot in South 

 Africa. 2778. — Ring-spot of cane leaves. 

 377. — Sugar-cane rot in South Africa. 

 2777, *2498. 



Van der Broek, M., and P. J. Schenk. Dis- 

 ease and enemies of garden plants. *2779. 



Van der Lek, H. A. A. Anthracnose-resist- 

 ant bean. *72. — Breeding disease-resist- 

 ant plants. *73. — Wilt disease in 

 Holland. 1666, H595, *1762.— Rev. of 

 Purkholder, W. H. 24. 



Van Dissel, E. D. Afforesting Dutch dunes. 

 582. 



Van der Wolk, P. C. Permanent modifica- 

 tions and mutations. 296. 



Van Fleet, W. Breeding of Freesia. 2207 — 

 Everbearing strawberries. 74. — New 



everbearing strawberries. 2206. — Pillar 

 rose. *75. — Rose crosses. 1042, *1091. 



Van Harreveld, Ph. Sugar-cane stripe dis- 

 ease in Dutch East Indies. 2657. 



Van Herwerden, M. Effects of radium on 

 Daphnia. 1044. — Cytological discoveries. 

 *39 — Heredity in Daphnia. 1043. 



Van Heurn, F. C. Sodium sulphite analyses 

 for rubber planters. 2064. 



Van Hofsten, H. (Lundborg) 648. 



Van Houten, J. M. Crown gall in apple 

 orchards. 2780. 



Van Laer, ll. Interactions of enzym 



2882. 

 Van Someren, V. <i. L. Melanism in Why- 

 dans. 207. 

 Van Tieghem, P. Elements of botany. 



(Rev. by A. I',. R.) is'js. 

 Van Trump, S. II. English walnut in Ore- 

 gon. *336. 

 Van Urk, II. \V. Pharmacognosy, Peuccd.i- 



num. 2821. 

 Van Wisselingh, C. Seedcoats, Papaver- 



aceae, etc. 2453, *1699. — Seedcoats, Cru- 



ciferae. 2809, *2454. 

 Vaulx, see De la Vaulx. 

 Vaupel, and Mellin. German Cactus-Society, 



meeting of January, 1919. 3025. 

 Vaupel, F. Cactus culture in Germany. 



3024. 

 Veall, J. J. Black-spot of pear in New Zea- 

 land. *2781. 

 Venkatarama Ayyar, K. R. Spike disease of 



sandal. 121. 

 Verdoorn, I. C. Fagara in South African her- 

 baria. 3026. 

 Verhoeven, W. B. L. Grain disinfection. 



1667. 

 Vermorel, and Dantony. Lime-sulphur 



sprays in France. 1200. 

 Vevers, G. M. (Gourlay, W. B., and G. M. 



Vevers) 2128. 

 Viardin, L. Early forest organization in 



Lorraine. 583. 

 Viaud-Bruant. New chrysanthemums. 1559. 

 Viehover, A. Chinese colza, a new oil-seed. 



2407. — A new oil plant from China. 1673. 



— (Alsberg, C. L., A. Viehoever, and C. 



O. Ewing) 1674. 

 Viguier, R. Aralias cultivated in France. 



1560, 1561. 

 Vilmorin, Jacques de. Wheat experimen 



Verrieres, 1917. 203. 

 Vilmorin, J. de, and A. Meunisser. Wheat 



in France. 202. 

 Vinal, W. G. Elementary teaching about 



seeds. 1928. 

 Vincent, C. C. Lime-sulphur spray in 



Idaho. 2782. 

 Vincens, F. L. Rev. of Beauveries, J. 1123. 

 Vitek, E. (Urban, J., and E. Vitek) 2S99. 

 Visher, S. S. Geography of South Dakota. 



1982. 

 Vochting, H. Polarity of plants. (Rev. by 



Stark) 2896. 

 Voegtlin, C, and C. N. Myers. Vitamine in 



wheat and maize. 813. 



