191«1 CONTENTS. HI 



Page. 



Work with field crops in 1915] 528 



Relative water requirement of com and the sorghums, Miller ! 529 



Sorghum and millet, Welton 529 



Growth and composition of clover and sorrel as influenced by limestone, White. 529 



Winter injury of alfalfa and clover, Gearhart 530 



Yields of hay from several varieties and strains of alfalfa, Hume and Champlin . 530 



Correlated characters in maize breeding, ColUns 531 



Cooperative fertilizer experiments with com, 1908-1914, Fraps 531 



Tests of soy beans, 1915, Jenkins, Street, and Hubbell 532 



Tobacco experiments, 1913, Frear, Olson, and Kraybill 532 



Influence of suckering upon the yield and quality of tobacco, Kraybill 533 



Influence of time of topping on distance between leaves on the stalk, Kraybill. 534 



White Burley tobacco. Cook and ScherfRus 534 



Tobacco growing in Canada, Charlan 534 



Wheat experiments, Williams 534 



Some lessons from the wheat crop of 1915, Thome 536 



HORTICULTURE . 



[Report of horticultural investigations], Lawrence and Johnson 537 



Report of the horticultural department, Higgins 538 



A variety test of tomatoes, Myers 539 



Influence of dynamiting on soils. White 539 



Irrigation, Allen 539 



Cover crops, Lewis and Allen 539 



Cultural methods, cover crops, and fertilization in apple orchards, Stewart 540 



Intercrops for apple orchards, Stewart 540 



Influence of nitrogen on devitalized apple trees, Lewis and Allen 540 



Condition of root system of apple trees in the Hood River district, Allen 541 



Winter injury to apple tree roots 542 



Ripening of growing parts of orchard trees and shrubbery, Selby 542 



Suggested grades for peaches, Blake and Connors 542 



Horticultural observations in Porto Rico, Cuba, and Florida, Higgins 542 



FORESTRY. 



Third biennial report of the State forester, 1914, Van Hook 542 



Fifth annual report of the State forester, Elliott 542 



Report of the State fire warden, Wilber 542 



Report on forest operations in Switzerland 543 



Report on the forest administration in Burma for the year 1914-15, Rogers 543 



Report on forest administration in Ajmer-Merawara for 1914-15, Hukam Chand . 543 



Report on forest administration in the Andamans for 1914-15, Grieve 543 



Report of forest circles in Bombay Presidency, including Sind, for 1914-15 543 



Progress report of forest administration in Coorg for 1914-15, Tireman 543 



Seeding and planting. Tourney 543 



The testing of pine seeds, Grisch 543 



Observations on some oaks with persistent foUage, Donati 543 



A list of the recognized woods of British Guiana 543 



Rubber 544 



Brazihan and plantation methods of preparing Para rubber, Whitby 544 



The rubber industry of the Amazon, Woodroffe and Smith 544 



DISEASES OF PLANTS. 



Plant pathology problems 544 



Studies on the crown gall of plants. Its relation to human cancer, Smith 545 



The distribution of black rust in Norway, Henning 545 



Diseases of garden vegetables in Switzerland , Mayor 546 



The physiology of Phoma hetse, Schander and Fischer 546 



Club root of cabbage, Hammarlund 546 



Glocosporium caulivorwm injuring red clover in Hungary, Hegyi 546 



Transmission and control of bacterial wilt of cucurbits. Rand and Enlows 546 



Bacteriosis of cucumber in Italy, Traverso 546 



Leaf rust of cucumber, Sprenger 546 



Ginseng diseases and their control, Whetzel et al 547 



The neck rot of white onions, Humbert 547 



Potato dry spot in Java, Rant 547 



Root rot of tobacco 547 



Bacterial rot of tomato, Peglion 547 



