Oct. i-Dec. 3, 1921 



Index 



521 



PilgC 



He polka sp., resistance to leliospores of Puc- 



cinia triticina 155-172 



Heterodera schachti, host selection 192 



Histidin in Georgia velvet bean 15 



Hogan, A. G., et al.: INFLUENCE OF 

 THE PLANE OF NUTRITION ON 

 THE MAINTENANCE REQUIRE- 



ilENT OF CATTLE 115-121 



Hoowkorm — 

 of cattle. See Bustomum phlebotomum. 

 of dog. See Ancylosloma cannium. 

 of man. See Necator americanus. 

 of man, Old World. See Ancylostinna 

 duodenale. 

 HOPKINS HOST-SELECTION PRINCI- 

 PLE AS RELATED TO CERTAIN 



CERAMBYCIDi: BEETLES 189-220 



Hordeum — 

 caespitosuin, resistance to aeciospores of 



Puccinia triticina 163-172 



gussoneanum, resistance toXaeciospores of 



Puccinia triticina 163-172 



jubatum — 



host oilPuccinia Agropyri i6s 



resistance to aeciospores oilPuccinia triti- 

 cina 163-172 



murinuiii, resistance to aeciospores of Puc- 

 cinia triticina 163-172 



pusilluut, resistance to aeciospores of Puc- 

 cinia triticina 163-1 72 



vuhare, resistance to' 'aeciospores of Puc- 

 cinia triticina 163-172 



Homed lark. See Otocoris alpestris leuco- 

 laeina. 



Host-selection principle 189-220 



Hucker, G. J.: MICROSCOPIC STUDY OF 



BACTERIA IN CHEESE 93-100 



Humidity, effect on Fusaria rots of Irish po- 

 tatoes 65-80 



HYDROCYANIC ACID IN SUDAN 



GRASS 125-138 



Hydrogen-ion concentration, effect on devel- 

 opment of nodules ou legiunes 30 



Hydrophyllum appendiculatuni, resistance to 



teliospores of Puccinia triticina 155-172 



Hydroxid, sodimn, effect on hydrocyanic 



acid in Sudan grass 135-136 



Hylolrupes ligneus, host selection 207-210 



Hyperplatys — 



aspersus, host selection 217-219 



maculatus, host selection 2 1 7-219 



Hystrix Hyslrix, resistance to aeciospores of 



Puccinia triticina 163-172 



hnpatiens sp., resistance to teliospores of Puc- 

 cinia triticina 155-172 



INFLUENCE OF THE PERIOD OF 

 TRANSPLANTING WESTERN 

 WHITE PINE SEEDLINGS UPON 

 THEIR BEHAVIOR IN NURSERY 



AND PLANTATION 33-46 



INFLUENCE OF THE PLANE OF NU- 

 TRITION ON THE MAINTENANCE 



REQUIREMENT OF CATTLE 115-121 



Ipomoea batata:, susceptibility of different 



varieties to Rhizopus spp 511-515 



Irish potato. See Solatium tuberosum. 



Page 

 Iron sulphate, effect on growing chicks. . . . 145-149 

 .Tackson, H. S., and Mains, E. B.: AECIAL 

 STAGE OF THE ORANGE LEAF- 

 RUST OF WHEAT, PUCCINIA TRI- 

 TICINA ERIKS I5I-I7J 



Jones, Fred Rcuel, and Tisdalc, W. B.: EF- 

 FECT OF SOIL TEMPERATURE 

 UPON THE DEVELOPMENT OF 

 NODULES ON THE ROOTS OF CER- 

 TAIN LEGUMES 17-31 



Jones, L. R., and Walker, J. C: RELA- 

 TION OF SOIL TEMPERATURE AND 

 OTHER FACTORS TO ONION SMUT 



INFECTION 235-263 



Kafir, hydrocyanic acid 137 



Kendrick, James B., and Gardner, Max W.: 



SOYBEAN MOSAIC 111-114 



TURNIP MOSAIC 123-124 



Kernel of barley, ash content 433-449 



Knautia arvensis, susceptibility to Puccinia 



triticina 152-172 



Lactate.'calcium, effect on growing chicks. 145-149 

 Lark; horned. See Otocoris alpestris leuco- 



laema. 

 Lnunaca';asplenifolia, suspected accial host of 



Puccinia triticina 153-172 



Leafiusl, orange.£ See Puccinia triticina. 

 "Leak," confused with blackeg potato 



tuber-rot 81-92 



Lecanium — 



corni, host selection 191 



robiniarum, host selection 191-220 



LeFevre, Edwin, and Thom, Charles: 



FLORA OF CORN MEAL 179-188 



Legumes, effect of soil temperature on devel- 

 opment of nodules 17-31 



Lcighty, Clyde E., and Boshnakian, Sarkis: 

 GENETIC BEHAVIOR OF THE 

 SPELT FORM IN CROSSES BE- 

 TWEEN TRITICUM SPELTA AND 



TRITICUM SATIVUM 335-364 



Ligustrum vulgare, susceptibility to Puccinia 



triticina 152-172 



Liopus alpha, host selection 194-220 



Liriodendron tulipifera — 



host of Hyperplatys maculatus 217-219 



immunity to Neoclytus erythrocephalus . . . 213-315 

 Lithospermum purPureo-coeruleum, suscepti- 

 bility to Puccinia triticina 152-172 



Locust. See Robinia pseudacacia. 

 Lodgepole pine. See Pinus contorta. 

 Lythrum Salicaria, susceptibility to Puccinia 



triticina 152-172 



Macracanthorhynchus hirudinaceus, hemo- 



toxins 387-432 



Magnesimn sulphate, effect on growing 



chicks 145-149 



Mains, E. B., and Jackson, H. S.: AECIAL 

 STAGE OF THE ORANGE LEAF- 

 RUST OF WHEAT, PUCCINIA TRI- 

 TICINA ERIKS 151-172 



Maize — 



nutritive deficiencies 139-149 



quercetin in brown-husked 1-31 



Malic acid. See Acid, malic. 

 Maple, red. See Acer rubrum. 



