1919] CONTENTS. HI 



Page. 



Acidity of Castilleia, Ericameria, and Erigeron, Richards ^ 29 



The acclimatizatioii of plants, Sutton 29 



FIET.D CBOPS. 



Dry farming in Arizona, McOmie, Filleriip, and Bates 29 



Dry farm crop rotations and cultural methods, Atkinson and Gieseker — 29 



Report of [field crops] work at Fairbanks, Georgeson and Snodgrass 29 



Report of [field crops] work at Kodiak Station, Pratt 30 



Report of [field crops] work at Rampart Station, Georgeson and Gasser__ 31 



Cotton and corn : Cultural and variety tests, McClelland 31 



[Report of work with field crops in Kansas, 1917-18] 32 



[Variety tests with alfalfa and potatoes], Gaskill 35 



[Report of work with field crops in New Jersey], App and Van Nuis 35 



Progress report, substation No. 11, Nacogdoches, Tex., 1909-1915, McNess_ 35 



A study of environment in small grains, Halsted 36 



Spring grains in western Nebraska, Zook 36 



Farm pastures in Montana, Atkinson 37 



A bad farm practice, Ayres 37 



Napier and Mcrker grasses, two new^ forage crops for Florida, Thompson. 37 



Field pea production in north Idaho, Hulbert 37 



Position in pod and productiveness ; seed weight, Schultz 38 



[Work with potatoes at the Sitka Station], Georgeson 38 



An improved method of potato seed treatment, Melhus and Gilman 38 



Control of weeds in rice fields, Laude 38 



Sugar beets under irrigation in Washington, Sievers and Schafer 39 



Strains of White Burley tobacco resistant to root rot, Johnson and Milton_ 39 



The velvet bean, McClelland 39 



Velvet bean varieties, Scott 39 



Wheat investigations — varieties, Grantham 39 



Fifth report of Montana grain inspection laboratory, Atkinson et al 39 



Test your clover and timothy seed. King and Pammel 40 



Results of seed tests for 1918, Taylor 40 



The composition of some lawn-grass mixtures, Helyar 40 



Johnson grass as a weed In southwestern Iowa, Pammel and King 40 



HORTICTJLTUKE. 



[Horticultural investigations in Alaska], Georgeson et al 40 



[Report on horticultural investigations] 41 



Report of the department of horticulture, Blake and Connors 41 



Studies on heredity and envii-onment, Halsted 42 



The breeding of vegetable fruits, Owen 43 



Spray and practice outline for fruit growers, Eustace and Pettit 43 



Analyses of insecticides and fungicides during 1918, Cathcart and Willis_ 43 



Sod, tillage, and fertilizers for the apple orchard, Gourley 43 



Fertilizer tests for strawberries, BrowP 44 



Currants and gooseberries, Darrow 45 



The avocado in Guatemala, Popenoe 45 



Vanilla. — A promising new crop for Porto Rico, McClelland 45 



Planting the rural school grounds, Halligan 43 



FORESTRY. 



Trees of Indiana, Deam 46 



Geologic history of the locust and its allies, Berry I 46 



[Progress report on forestry investigations] 46 



Waipoua Kauri Forest, its demarcation and management, Hutchins 46 



Observations on distribution of forest tree pollen, Hesselman 46 



Anatomy of the union of a spruce graft on pine, Romell 47 



Study of frustum form factors of hard maple and yellow birch, Chandler, 47 



Obtaining form-class and volume of trees by use of form-point, Petrini 47 



Results of cutting at Ne-Ha-Sa-Ne Park, in the Adirondacks, Chandler.. 47 



On the question of forest renewal, Beekman 48 



The northeastern Minnesota forest fires of October 12, 1918, Richardson__ 48 



A contribution on the tan bark question, van den Bussche 48 



Charcoal burning In Sweden, Dijkmans 48 



