IV 
Joumal of Agricultural Research 
Vol. XXVIII 
Page 
Leather Rot of Strawberries. Dean H. Rose (6 text figures; 2 plates)-. 357 
The Cambium Curculio, Conotrachelus anaglypticus Say. Fred E. Brooks 
and R. T. Cotton (1 text figure; 3 plates)___ 377 
Relation of the Molecular Proportions in the Nutrient Solution to the 
Growth of Wheat. M. C. Sewell (4 text figures)_ 387 
Studies on Nonarsenical Stomach-Poison Insecticides. William Moore 
and F. L. Campbell_ 395 
Studies upon the Relative Merits of Sweet Corn Varieties for Canning 
Purposes and the Relation of Maturity of Corn to the Quality of the 
Canned Product. C. W. Culpepper and C. A. Magoon (11 text 
figures)_ 403 
The Photoperiodism of Tephrosia Candida . T. B. McClelland (7 text 
figures; 4 plates)_ 445 
Antineuritic Vitamin in Poultry Flesh and Eggs. Ralph Hoagland and 
Alfred R. Lee_ 461 
Dissemination of the Stem and Bulb Infesting Nematode, Tylenchus .. 
dipsaci , in the Seeds of Certain Composites. G. H. Godfrey (3 plates). 473 
Some Modifications of the Picric Acid Method for Sugars. J. J. Willa- 
man and F. R. Davison (2 text figures)___ 479 
Effect of Moisture on a Seed-Borne Bean Disease. Lewis T. Leonard 
(4 text figures)_ 489 
Factors Influencing the Binding Power of Soil Colloids. Howard E. 
Middleton (6 text figures)_ 499 
The Genetic Relation between Triticum dicoccum dicoccoides and a 
Similar Morphological Type Produced Synthetically. H. H. Love and 
W. T. Craig (8 plates)_ 515 
Bud Selection as Related to Quality of Crop in the Washington Navel 
Orange.' A. D. Shamel, C. S. Pomeroy, and R. E. Caryl (4 plates) __ 521 
v /'The Determination of Nitrate and Ammonia in Nitrogenous Materials. 
O. M. Shedd__ 527 
Puccinia Graminis Poae Erikss. and Henn. in the United States. E. C. 
Stakman and M. N. Levine (2 text figures; 1 plate)_ 541 
Relation of Soil Temperature and Soil Moisture to Infection by PZas- 
modiophora brassicae. John Monteith, Jr. (5 plates)__ 549 
Length of Cotton Fiber from Bolls at Different Heights on the Plant. 
Thomas H. Kearney and George J. Harrison (1 text figure)_ 563 
“Hairy Neck” Wheat Segregates from Wheat-Rye Hybrids. Clyde E. 
Leighty and J. W. Taylor (5 plates)_ 567 
Ascaris Sensitization. B. H. Ransom, W. T. Harrison, and J. F. Couch 
(1 plate)..._ 577 
Physalospora malorum on Currant. Neil E. Stevens (2 plates)_ 583 
Botryosphaeria and Physalospora on Currant and Apple. C. L. Shear, 
Neil E. Stevens, and Marguerite S. Wilcox (3 text figures; 2 
plates)_.\_ 589 
Isolation of an Inhibitory Substance from Plants. W. L. Mallman and 
Carl Hemstreet_ 599 
Two Hitherto Unreported Diseases of Stone Fruits. C. C. Lindegren 
and Dean H. Rose_ 603 
Studies Relating to the Immunology of Bovine Infectious Abortion. J. 
M. Buck and G. T. Creech_I_ 607 
The Rhizoctonia Brown Rot and Other Fruit Rots of Strawberries. B. O. 
Dodge and Neil E. Stevens (3 plates)___ 643 
Effective Use of Hydrocyanic-Acid Gas in the Protection of Chick-Peas 
(Cicer arietinum) Warehoused in 240-Pound Sacks. E. A. Back and 
R. T. Cotton (1 text figure; 1 plate)_ 649 
A New Nematode, Cylindropharynx ornata , from the Zebra, with Keys 
to Related Nematode Parasites of the Equidae. Eloise B. Cram (8 
text figures)___.. 661 
Chromosomes in Maize and Maize Relatives. Albert E. Longley (3 
plates)___...._ 673 
A Fusarium Bulb Rot of Onion and the Relation of Environment to Its 
Development. J. C. Walker and E. C. Tims (3 text figures; 3 plates).. 683 
The Chlorid Content of the Leaf Tissue Fluids of Egyptian and Upland 
Cotton. J. Arthur Harris, John V. Lawrence, and Zonja Wallen 
Lawrence_ 695 
