July 1-Dec. 15, 1925 
Contents 
v 
Some Possible Errors in the Use of Curves. Donald Bruce (6 text 
figures)- 923 
A Preliminary Study of the Growth of Noble Fir. E. J. Hanzlik (2 text 
figures)- 929 
The Genetics of Sex in Hemp. Hugh C. McPhee_ 935 
Effects of Feeding Animals with Trichinous Meat Containing Nonviable 
Trichinae. Benjamin Schwartz_ 945 
Limitation of Student’s Method When Applied to Fertilizer Experiments. 
W. W. Weir_ 949 
Crown-gall Studies of Resistant Stocks for Prunus. Clayton O. Smith 
(3 plates)_ 957 
Growth-Equation Constants in Crop Studies. W. L. Gaines and W. B. 
Nevens (9 text figures)_ 973 
Net-Energy Values of Alfalfa Hay and Alfalfa Meal. E. B. Forbes, J. 
August Fries, and W. W. Braman_ 987 
The Value of Litmus, Brom-Cresol Purple, and Janus-Green Milk in a 
Study of the Nodule Organisms of Leguminosae. J. W. Stevens_ 997 
A Chemical Study of the Flesh of Emaciated Cattle. Ralph Hoagland 
and Wilmer C. Powick_ 1001 
Composition of Marrow of Fresh and Cured Hams. W. F. Schroeder 
and David Edelman_ 1015 
Inactivation of Vitamin A by Rancid Fat. Wilmer C. Powick (3 text 
figures)_ 1017 
The Leaf-Tissue Fluids of Egyptian Cottons. J. Arthur Harris, W. F. 
Hoffman, W. B. Sinclair, A. H. Johnson, and R. D. Evans_ 1027 
The Use of Vacuum for Insect Control. E. A. Back and R. T. Cotton. _ 1035 
The Relation of Size of Kernels in Sweet Corn to Evenness of Maturity. 
I. C. Hoffman (1 plate; 1 text figure)_ 1043 
The Maintenance Requirement of Dry Cows. Donald C. Cochrane, 
J. August Fries, and Winfred W. Braman_ 1055 
Revised Net-Energy Values of Feeding Stuffs for Cattle. E. B. Forbes 
and Max Kriss_:_ 1083 
Studies in Western Yellow Pine Nursery Practice. Donald R. Brewster 
and J. A. Larsen (5 text figures)_ 1101 
Yield Capacities of the Pure Yellow Pine Type on the East Slope of the 
Sierra Nevada Mountains in California. S. B. Show (11 text figures)-- 1121 
Preliminary Observations on an Insect of the Cotton Stainer Group New 
to the United States. T. C. Barber (2 text figures)_ 1137 
Nitrogen Metabolism in Etiolated Corn Seedlings. S. L. Jodidi_ 1149^ 
Mineral Composition of Sunflowers Grown for Silage. Ray E, Neidig 
and Robert S. Snyder (3 text figures)_ 1165 
Influence of Field-Pea Rations on the Quality of Pork. J. E. Nordby 
and Robert S. Snyder_ 1173 
Germination of Frozen and Nonfrozen Wheat Harvested at Various 
Stages of Maturity. W. O. Whitcomb and Paul Francis Sharp (4 
plates)_ 1179 
The Influence of Nitrate Nitrogen upon the Protein Content and Yield 
of Wheat. Edmund Burke (3 text figures)_ 1189 
