Apr. 3-Sept. 25, 1916 



Index 



1053 



Heat— Page 



determination of, in calorimeter 710-718 



effect of, on nitrogen-fixing power of soil 

 containing arsenic 409 



Henley, R. R., and Dorset, M. (paper) Pro- 

 duction of Clear and Sterilized Anti-Hog- 

 Cholera Serum 33J-338 



Hessian fly — 

 parasites of, life histories and method of 



rearing 367-382 



See Mayetiola destructor. 



Hevea spp., host plants of Diplodia spp 152 



Hoagland, Ralph, and McBryde, C. N. 

 (paper) Effect of Autolysis upon Muscle 

 Creatin S3S - 547 



Hog cholera, serum for 333 - 338 



Holland, E. B., Reed, J. C, and Buckley, 

 J. P. jr. (paper) Determination of Stearic 

 Acid in Butter Fat 101-1 13 



Holloway, T. E. (paper) Larval Characters 

 and Distribution of Two Species of Dia- 

 traea 62 1-626 



Holmes, A. D., and Langworthy, C. F. 

 (paper)— 



Digestibility of Hard Palates of Cattle 641-648 



Digestibility of Very Young Veal 577-588 



Hordeum — 

 vulgare, host plant of Puccinia graminis. . 813-815 

 sativum hexaslichon, analysis of 494 



Howe, R. W., and Coad, B. R. (paper) 

 Insect Injury to Cotton Seedlings 129-140 



Hyalopterous pruni, host of Aphidoletes 

 meridionalis 884 



Hydrocyanic acid — 



distribution of, in Sorghum vulgare 270-271 



in sorghum, effect of climatic factors on. . 261-272 

 loss of, efficiency of alkaline preservative in 

 preventing 262-263 



Hydrogen peroxid, treatment of virus of mo- 

 saic disease with 655-657 



Hygroscopic coefficient — 



and moisture equivalent, ratio of 838, 840, 842 



use of the moisture equivalent for the in- 

 direct determination of 833-846 



Hyperaspis binotata, a Predatory Enemy of 

 the Terrapin Scale (paper) 197-204 



Hyperaspis binotata — Page 



distribution of 198 



habits of 200-202 



history of 197-198 



hosts of 198 



larval instars of 201 



life stages of 199 



natural enemies of 202 



seasonal history of 200-202 



Hypoderma deformans — 



description of 277-278 



distribution of 286-287 



general biology of 278-282 



parasitism of 282-283 



pathological effect of on Pinus ponderosa . 283-286 

 Hypoderma deformans. An Undescribed 

 Needle Fungus of the Western Yellow 

 Pine (paper) 277-288 



Impermeable seed — Page 



influence of — 



maturity on rate of softening 766-767 



various factors on rate at which, become 



permeable 770-772 



in nonleguminous plants 762-763 



longevity of 763 



occurrence of, in cultivated species 762-763 



rate of softening of 765-766 



use of 792-793 



viability of 764-765 



Infection of Timothy by Puccinia graminis 

 (paper) 813-816 



Influence of Barnyard Manure and Water 

 upon the Bacterial Activities of the Soil 

 (paper) 889-926 



Influence of Calcium and Magnesium Com- 

 pounds on Plant Growth (paper) 589-620 



Insect Injury to Cotton Seedlings (paper). 129-140 



Ipomoea batatas — 

 host plant of — 



Diplodia tubericola 5SO-55* 



Fusarium radicicola 299 



Irrigation — 



method of, used in Rock Creek region 745-746 



vegetative succession under 741-760 



Jelly-end rot, caused by Fusarium radicicola 305-306 

 Jensen, C. A.. McLane. J. W., and Briggs, L. 

 J. (paper) Mottle-leaf of Citrus Trees in Re- 

 lation to Soil Conditions 721-740 



Lacewing fly, California green. See Chrysopa 

 calif ornica. 



Lady beetle, twelve-spotted. See Epilackna 

 borealis. 



Langworthy, C. F., and Holmes, A. D. (pa- 

 per)— 

 Digestibility of Hard Palates of Cattle. . 641-648 

 Digestibility of Very Young Veal 577-588 



Langworthy, C. F., and Milner, R. D. (pa- 

 per) A Respiration Calorimeter, Partly 

 Automatic, lor the Study of Metabolic 

 Activity of Small Magnitude ! 703-720 



Lamb, A. R., and Eward, J. M. (paper) 

 Rape as Material for Silage 527-533 



Larval Characters and Distribution of Two 

 Species of Diatraea (paper) 621-626 



Lasiodcrma serricorne, effect of Rontgen rays 

 on 383-388 



Leaf miner of apple, tentiform 289-296 



LeaSspol — 

 relation of climatic conditions to 2t-6o 



" Leak" — 



disease of potatoes known as 627-640 



potato, appearance of 628 



Legume, seeds of, comparison of germina- 

 tion under varying conditions 785-789 



Lemon. See Citrus incdica. 



Leucotermes lucifugus, host insect of Diplo- 

 gaster aerivora 1:5, 121, 126-127 



Life Cycles of the Bacteria (paper) 675-702 



Life Histories and Methods of Rearing Hes- 

 sian-Fly Parasites (paper) 367-382 



