1206 
Journal of Agricultural Research 
Vol. XXXI 
Hofmann, J. V.—Continued. Page 
Sowing, Best Time for Silver Fir in the 
Nursery_ 261-266 
Hogging off field peas, effect on quality of 
pork_1173-1178 
Hogs, feeding with peas, results-1176-1179 
Hominy feed, feeding value computation. _ 479-480 
Homozygosis, livestock, note-- 377 
Hunt, N. Rex, O’Donnell, F. G., and Mar¬ 
shall, Rush P.: Steam and Chemical 
Soil Disinfection With Special Refer¬ 
ence to Potato Wart. 301-363 
Hymenoptera, endurance of vacuum- 1035 
Inactivation of Vitamin A by Rancid Fat: 
Wilmer C. Powick. 1017-1026 
Inbreeding and Relationship, Approximate 
Method of Calculating Coefficients 
From Livestock Pedigrees: Sewall 
Wright and Hugh C. McPhee. 377-383 
Incubation, results of Plymouth Rock eggs 
for different weight classes. 691 
Indio, California, air temperatures.. 441-442 
Infection ratings, graphs, Goldcoin wheat 
plants infected with Ophiobolus gram- 
inis .—..— 834-837 
Insect— 
Control, Use of Vacuum: E. A. Back and 
R. T. Cotton_ 1035-1041 
Cotton Stainer Group, New totheUnited 
States, Preliminary Observations: T. 
C. Barber_ 1137-1147 
Insecticides. See Chloropicrin. 
Insects— 
carrying of mosaic_11-18,29-30 
destruction— 
by vacuum tubes..1030-1037,1039 
in vacuum vault_1030-1039 
stage of susceptibility to vacuum--- 1039 
Iodine values, pork, indication in field pea 
ration.—.-.1177-1178 
Irrigation- 
effect on— 
fruit-bud development of the pear. 882 
soil temperature, note. 442 
influence on fruit-bud formation of pear 
and apricot. 878-882 
reduction of nitrates in soil_1197-1198 
relation to wheat protein and yield_ 1198 
Water and Manure, Influence on the 
Corn Kernel: J. E. Greaves and D. H. 
Nelson..183-189 
Isoelectric Points for Plant Tissue, Further 
Studies: William J. Robbins and Irl T. 
Scott.....—- 385-399 
Jodidi, S. L.: Nitrogen Metabolism in Etio¬ 
lated Corn Seedlings. 1149-1164 
Johnson, A. H.— 
and Chapman, R. N.: Possibilities and 
Limitations of Chloropicrin as a Fumi¬ 
gant for Cereal Products. 745-760 
Evans, R. D., Harris, J. A., Hoffman, 
W. F., and Sinclair, W. B.: The Leaf- 
tissue Fluids of Egyptian Cottons. 1027-1033 
Johnston, C. O., and Hayes, Wm. P.: The 
Reaction of Certain Grasses to Chinch- 
bug Attack. 575-583 
Jull, M. A.— 
and Haynes, S.: Shape and Weight of Eggs 
in Relation to Their Hatching Quality. 685-094 
and Quinn, J. P.: The Relationship 
Between the Weight of Eggs and the 
Weight of Chicks According to Sex- 223-226 
Kansas, Manhattan, agricultural experi¬ 
ment station, data on grasses under 
chinch-bug attack.- 580-582 
Kaolin- 
emulsifier use_ 60 
emulsions..__ 61,63,64 
Kendrick, James B., and Gardner, Max W.: 
Bacterial Spot of Cowpea and Lima 
Bean___ 841-863 
Page 
King, C. J., and Harrison, G. J.: Age of 
Seedlings as a Factor in the Resistance 
of Maize to Sodium Chloride_ 633-640 
Klotz, L. J., and Coons, G. H.: The Nitro¬ 
gen Constituents of Celery Plants in 
Health and Disease.. 287-300 
Kreis test, use in study of vitamin A. 1018 
Kriss, Max— 
An Improved Method of Computation of 
Net-energy Values of Feeding Stuffs... 469-484 
and Forbes, E. B.: Revised Net-energy 
Values of Feeding Stuffs for Cattle.. _ 1083-1099 
Kyle, Curtis H., and Stoneberg, Hugo F.: 
Associations Between Number of Ker¬ 
nel Rows, Productiveness, and Dele¬ 
terious Characters in Corn... 83-99 
Lamb— 
Beef and Pork, Vitamin A in: Ralph 
Hoagland and George C. Snider_ 201-221 
vitaniin A in_215-219,220 
Lard, use in vitamin experiment.. 1017-1026 
Larrimer, Walter H.: Behavior of Phyto- 
phaga destructor Say. Under Conditions 
Imposed by Emergence Cases. 567-574 
Larsen, J. A.— 
and Brewster, Donald R.— 
Girdling as a Means of Removing Un¬ 
desirable Species in the Western 
White-pine Type—. 267-274 
Studies in Western Yellow-pine Nurs¬ 
ery Practice. __. 1101-1120 
Methods of Stimulating Germination of 
Western White-pine Seed.. 889-899 
Larvicide, for Screw Worms, Benzene as: 
D. C. Parman. 885-899 
Larvicides, toxicity of, chemicals tested— 885-886 
Lassen Forest, yield of yellow pine—1125-1126 
Lead arsenate, amount on leaves from 
spraying... 79,80 
Leaf- 
blight differences from leaf SDOt of maize. 704, 
706-711 
spot- 
celery, effect on nitrogen constituents, 
experiments. 291-294 
infection of teosinte...712-714 
Maize— 
Caused by Ophiobolus heterostrophus , 
n. sp.. the Ascigerous Stage of a 
Helminthosporium Exhibiting Bi- 
S olar Germination: Charles Drechs- 
«r.. 701-726 
differences from leaf blight... 704,706-711 
symptoms.. 701-708 
Leaf-Tissue Fluids of Egyptian Cottons: 
J. Arthur Harris, W. F. Hoffman, 
W. B. Sinclair, A. H. Johnson, and 
R. D. Evans. 1027-1033 
Leaves— 
date palm- 
growth and distribution about axis- 455 
periodicity of elongation..— 455,457-468 
growth in date palm, time of day for- 447 
Leeks, susceptibility to Urocystis cepulae.. 275 
Leete, C. S.: Relation Between the Bac¬ 
terial Count of Whole Milk and that 
of the Cream and Skim Milk Sep¬ 
arated from It.. 695-699 
Legumes, nodule bacteria studied by means 
of litmus, brom-cresol purple, and 
j anus-green milk. 997-1000 
Leguminosae, Study of the Nodule Or- 
S inisms, Value of Litmus, Brom- 
resol Purple, and Janus-Green Milk: 
J. W. Stevens... 997-1000 
Leptinotarsa decemlineata. See Colorado 
Potato Beetle. 
Light, sources and intensity. 465 
Lima Bean and Cowpea, Bacterial Spot of: 
Max W. Gardner and James B. Ken¬ 
drick_ 841-863 
Kernel Rows, Corn, Associations with Pro¬ 
ductiveness and Deleterious Charac¬ 
ters: Curtis H. Kyle and Hugo F. 
Stoneberg.. 83-99 
Kernels, Sweet Corn, Relation of Size to 
Evenness of Maturity: I. C. Hoff¬ 
man_ 1043-1053 
Kerosene; chemical tests.. 334 
Lindsey, J. B., and Archibald, J. G.: The 
Value of Calcium Phosphate as a Sup¬ 
plement to the Ration of Dairy Cows.. 771-791 
Litmus— 
Brom-Cresol Purple, and Janus-Green 
Milk, Value in a Study of the Nodule 
Organisms of Leguminosae: J. W. 
Stevens .... 997-1 
