Journal of Agricultural Research 



Page 



Gossypol, the Toxic Substance in Cottonseed Meal. W. A. With- 

 ers and F. E. Carruth 261 



Two New Hosts for Peridermium pyriforme. George Grant 



Hedgcock and William H. Long 289 



Pathogenicity and Identity of Sclerotinia libertiana and Sclero- 



tinia smilacina on Ginseng. J. Rosenbaum 291 



An Improved Respiration Calorimeter for Use in Experiments 



with Man. C. F. LangworThy and R. D. Milner 299 



Occurrence of Manganese in Wheat. William P. Headden 349 



Ash Composition of Upland Rice at Various Stages of Growth. 



P. L. GiLE and J. O. Carrero 357 



Varietal Resistance of Plums to Brown-Rot. W. D. VallEau. . . . 365 

 Frequency of Occurrence of Tumors in the Domestic Fowl. May- 



NiE R. Curtis 397 



Inheritance of Length of Pod in Certain Crosses. John Belling . 405 

 A Honeycomb Heart-Rot of Oaks Caused by Stereum subpilea- 



tum. William H. Long 421 



Measurement of the Winter Cycle in the Egg Production of Domes- 

 tic Fowl. Raymond Pearl 429 



Influence of Growth of Cowpeas upon Some Physical, Chemical, 



and Biological Properties of Soil. C. A. LeClair 439 



Translocation of Mineral Constituents of Seeds and Tubers of 



Certain Plants During Growth. G. Davis Buckner 449 



Fate and Effect of Arsenic Applied as a Spray for Weeds. W. T. 



McGeorge 459 



Angular Leaf-Spot of Cucumbers. Erwin F. Smith and Mary 



Katherine Bryan 465 



Activity of Soil Protozoa. George P. Koch 477 



Beriberi and Cottonseed Poisoning in Pigs. GeorgE M. Rommel 



and Edward B. Vedder 489 



Biology of Apanteles militaris. Daniel G. Tower 495 



Respiration Experiments with Sweet Potatoes. Heinrich Has- 



selbring and Lon A. Hawkins 509 



J Cherry and Hawthorn Sawfly Leaf Miner. P. J. Parrott and 



B. B. Fulton 519 



Variations in Mineral Composition of Sap, Leaves, and Stems of 



the Wild-Grape Vine and Sugar-Maple Tree. O. M. Shedd. . . . 529 

 Carbohydrate Transformations in Sweet Potatoes. Heinrich 



Hasselbring and Lon A. Hawkins 543 



Diuresis and Milk Flow. H. Steenbock 561 



