Journal of Agricultural Research y 0 i. xxx 
Page 
The Strawberry Root Louse in Tennessee. S. Marcovitch (3 plates)_ 441 
The Effect of Sulphur and Gypsum on the Fertility Elements of Palouse 
Silt Loam. Lewis W. Erdman (1 text figure) _ 451 
Phvtophthora Rot of Pears and Apples. Dean H. Rose and Carl C. 
Lindegren (2 plates)_ 403 
Some Physical and Chemical Properties of Carotin and the Preparation of 
the Pure Pigment. F. M. Schertz (1 text figure)_ 469 
The Life History of the Texas Root Rot Fungus, Ozonium omnivorum 
Shear. C. L. Shear (1 plate; 2 text figures)_ 475 
The Distribution of the Alfalfa Weevil (Phytonomuspost icus Gyll.) A 
Study in Physical Ecology. William C. Cook (12 text figures)_ 479 
Infection and Dissemination Experiments with Degeneration Diseases of 
Potatoes. Observations in 1923. E. S. Schultz and Donald Folsom 
(10 plates; 1 text figure)_ 493 
Studies of Spore Dissemination of Venturia inaequalis (Cke.) Wint. in 
Relation to Seasonal Development of Apple Scab. C. N. Frey and 
G. W. Keitt (1 text figure)_ 529 
Relation Between Mortality of Trees Attacked by the Spruce Budworm 
(Cacoecia fu)niferana Clem.) and Previous Growth. F. C. Craighead 
(5 text figures)_ 541 
Review of the Nematode Genera Syngamus Sieb. and Cyathostoma E. 
Blanch. Edward A. Chapin (4 plates)___ 557 
Cooperia bisonis, A New Nematode from the Buffalo. Eloise B. Cram 
(7 text figures)_ 571 
Some Physical and Chemical Properties of Xanthophyll and the Prepara¬ 
tion of the Pure Pigment. F. M. Schertz (1 text figure)_ 575 
Physiological Studies on Cereals. III. The Occurrence of Polypeptides 
and Amino Acids in the Ungerminated Maize Kernel. S. L. Jodidi_ 587 
Relation of Weather Conditions to the Spread of White Pine Blister Rust 
in the Pacific Northwest. L. H. Pennington (2 text figures)_ 593 
The Construction of Taper Curves. Frederick S. Baker (10 text 
figures)_ 609 
Psilocybe as a Fermenting Agent in Organic D 6 bris. Charles Thom and 
Elbert C. Lathrop__ 625 
Relative Susceptibility of Citrus Varieties to Attack by Gloeosporium 
limetticolum (Clausen). Harry R. Fulton_ 629 
Reforestation by Seed Sowing in the Northern Rocky Mountains. W. 
G. Wahlenberg (2 text figures)_J_ 637 
Two Imported Egg Parasites of the Gipsy Moth, Anastatus bifasciatus 
Fonsc. and Schedius kuvanae Howard. S. S. Crossman (11 text figures) _ 643 
New Nematodes from North American Mammals. Edward A. Chapin 
(4 text figures)_ 677 
Further Investigations of Infectious Equine Anemia in Nevada. Lewis 
H. Wright (12 text figures)_ 683 
The Use of Liability Ratings in Planning Forest Fire Protection. W. N. 
Sparhawk (36 text figures)_ 693 
Ascaridia lineata, a Parasite of Chickens in the United States. Benjamin 
Schwartz (18 text figures)_ 763 
Some Laboratory Methods for Parasitological Investigations. Maurice 
C. Hall and Eloise B. Cram (1 text figure)_ 773 
Some Lepidopterous Larvae Resembling the European Corn Borer. 
William O. Ellis (2 plates)__ 777 
The Influence of Temperature of the Infection and Decay of Sweet 
Potatoes by Different Species of Rhizopus. J. I. Lauritzen and L. L. 
Harter (9 text figures)_ 793 
Time of Year to Plant Mother Beets for Seed Production. Dean A. 
Pack (4 plates)_ 811 
The Soil Mulch in the Absorption and Retention of Moisture. M. A. 
McCall (6 text figures)_ 819 
Fundamentals for Taxonomic Studies of Fusarium. H. W. Wollen- 
weber, C. D. Sherbakoff, O. A. Reinking, Helen Johann, and 
Alice A. Bailey (1 text figure)_ 833 
The Ham Beetle, Necrobia rufipes de Geer. Perez Simmons and George 
W. Ellington (2 plates; 1 text figure)_ 845 
Studies on Conformation in Relation to Milk Producing Capacity in Cattle. 
IV. The Size of the Cow in Relation to the Size of Her Milk Production. 
John W. Gowen (1 text figure)_ 865 
