CONTENTS 



Studies in Inheritance of Certain Characters of Crosses between Page 

 Dairy and Beef Breeds of Cattle. John W. Gowen i 



Condition of Fertihzer Potash Residues in Hagerstown Silty Loam 



Soil. William Frear and E. S. Erb 59 



Hardening Process in Plants and Developments from Frost Injury. 



R. B. Harvey 83 



Chemistry of Sweet-Clover Silage in Comparison with Alfalfa Silage. 



C. O. SwANSON and E. h. Tague 113 



Effect of Hydrocyanic-Acid Gas under Vacuum Conditions on 



Subterranean Larvae. E. R. Sasscer and H. L. Sanford. ... 133 



Catalase and Oxidase Content of Seeds in Relation to Their Dor- 

 mancy, Age, Vitality, and Respiration. William Crocker and 

 George T. Harrington 137 



The Meadow Plant Bug, Miris dolabratus. HERBERT Osborn. . 175 



Angular- Leafspot of Cucumber: Dissemination, Overwintering, 



and Control. Eubanks Carsner 201 



Plasticity of Biologic Forms of Puccinia graminis. E. C. Stak- 



man, F. J. PiEMEiSEL, and M. N. LEVinE 221 



Experiments in Field Technic in Plot Tests. A. C. Arny and H. K. 



Hayes 251 



Fumigation of Cattleya Orchids with Hydrocyanic- Acid Gas. E. 

 R. Sasscer and H. F. Dietz 263 



Net Energy Values of Alfalfa Hay and of Starch, Henry Pren- 

 tiss Armsby and J. August Fries 269 



Soil Factors Affecting the Toxicity of Alkali. F. S. Harris and D. 



W. Pittman 287 



Soil Acidity as Affected by Moisture Conditions of the Soil. S. D. 



Conner 321 



Determining the Absolute Salt Content of Soils by Means of the 

 Freezing-Point Method. GeorgE J. BouYoucos and M. M. 

 McCooL 331 



Sweet-Potato Storage Rots. L. L. Harter, J. L. WeimER, and 



J. M. R. Adams 337 



Physiological Studies of Normal and Blighted Spinach. Rodney 

 H. True, OtisF. Black, James W. Kelly, H. H. Bunzell, Lon 

 A. Hawkins, Samuel L. Jodidi, and Edward H. Kellogg. . 369 



Further Studies on Brisket Disease. GeorgE H. GlovER and 



I. E. Newsom 409 



(III) 





