Jan. 1, 1925-June 15, 1925 
Contents 
v 
Page 
Necrosis, Hyperplasia, and Adhesions in Mosaic Tomato Fruits. Max W. 
Gardner (8 plates; 1 text figure)_ 871 
Feeding Chlorinated Milk to the Albino Rat. J. W. Read and Harrison 
Hale (3 text figures)_ 889 
The Possibility of Sex Control by Artificial Insemination with Centrifuged 
Spermatozoa. Jay L. Lush (14 text figures)_ 893 
Correlated Inheritance of Botanical Characters in Barley, and Manner of 
Reaction to Helminthosporium sativum. Fred Griffee (2 plates; 
1 text figure)- 915 
The Relation of Sulphur to Alfalfa Production. Oscar C. Bruce (3 plates) 937 
Carbon Trichloride as an Anthelmintic, and the Relation of Its Solubility 
to Anthelmintic Efficacy. Maurice C. Hall and Eloise B. Cram_ 949 
A Study of the Influence of Inoculation upon the Fermentation of Sauer¬ 
kraut. O. R. Brunkow, W. H. Peterson, and E. B. Fred_ 955 
A Physiological Stud}^ of Mucor racemosus and Diplodia tubericola —Two 
Sweet Potato Storage-Rot Fungi. L. L. Harter_ 961 
Microorganisms in Decomposing Oysters. Albert C. Hunter and Ber¬ 
nard A. Linden_ 971 
The Egg-Producing Capacity of A scans lumbricoides. Eloise B. Cram 
(6 text figures)_ 977 
A Study of Essential Plant Foods Recoverable from the Manure of Dairy 
Cows. C. F. Wells and B. A. Dunbar_ 985 
Physiological and Biochemical Studies on Cereals. IV. On the Presence of 
Amino Acids and Polypeptides in the Ungerminated Rye Kernel. 
S. L. Jodidi and J. G. Wangler_ 989 
Factors Affecting Reproduction of Engelmann Spruce. W. C. Lowder- 
milk (6 plates)_ 995 
The Role of the Hydrogen-Ion Concentration on the Development of Pig¬ 
ment in Fusaria. Christos P. Sideris (1 plate)_ 1011 
Effect of Seeds upon Hvdrogen-Ion Concentration Equilibrium in Solu¬ 
tion. Willem Rudolfs (1 text figure)_.-- 7 -- 1021 
Fusarium Resistant Cabbage: Progress with Second Early Varieties. 
L. R. Jones, J. C. Walker, and John Monteith, Jr. (2 plates)_ 1027 
The Cottony Leak of Cucumbers Caused by Pythium aphanidermatum. 
Charles Drechsler (2 plates; 1 text figure)_ 1035 
Comparative Studies of Pythium debaryanum and Two Related Species 
from Geranium. Harry Braun (8 plates; 3 text figures)_ 1043 
Variation in the Kherson Oat at Akron, Colorado. F. A. Coffman and 
T. R. Stanton (4 plates; 1 text figure)___ -_ 1063 
Relation Between Weather Conditions and Yield of Cotton in Louisiana. 
Bradford B. Smith (1 text figure)_ 1083 
Relative Susceptibility of Some Rutaceous Plants to Attack by the Citrus 
Scab Fungus. John R. Winston, John J. Bowman, and Walter J. 
Bach_ 1087 
Effects of Crops on the Yields of Succeeding Crops in the Rotation, with 
Special Reference to Tobacco. W. W. Garner, W. M. Lunn, and 
D. E. Brown (7 plates; 17 text figures)- 1095 
Some Effects of Seasonal Conditions upon the Chemical Composition of 
American Grape Juices. Joseph S. Caldwell (13 text figures)- 1133 
Natural Reproduction after Forest Fires in Northern Idaho. J. A. Larsen 
(4 plates; 3 text figures)_ 1177 
