324 



Journal of Agricultural Research 



Vol. XVII 



Page 



Com, sweet. See Sweetcom. 



Cows, Ayrshire, variation in quantity and fat 

 content of milk 285-321 



Creatin in meat extracts 6-16 



Creatinin in meat extracts 6-16 



Creech, G. T., et al. (paper): Bacterium abor- 

 tus Infection of Bulls 239-246 



Clcnocephalus cants, toxity of Derris to . . . 192-200 



Dalana niinistra larvse, toxity of Derris to. . 196-200 



Datanas. See Datana minisiro. 



Deguclia spp. Syn. Derris spp. 



Dehiscence of anthers, effect of rain i lo-i 13 



Dermanyssus gallinae, toxity of Derris to. . . 192-200 



'"Derrid," substance derived from Derris 

 elliptica 179 



Derris as an Insecticide (paper) 177—200 



Derris — 

 elliptica — 



fish poison 177-178 



insecticide 177-200 



Tobusla, insecticide 177-200 



scandens, insecticide 177-200 



uliginosa, insecticide 177-200 



spp., extracts from, methods of preparing 180-191 



Derris — 



contact insecticide 189-200 



histological methods of tracing poison of. 197-199 



pharmacological effects of 197-199 



stomach poison 182-200 



Disinfection of seed by formaldehydevapor. . . 33-39 



Disperse colloids, ultra-microscopic exam- 

 ination of 167-176 



Dog fleas. See Ctenocephalus canis. 



Dorsey, M. J. (paper): Relation of Weather 

 to Fruitfulness in the Plum 103-126 



Effect of Removing the Pulp from Camphor 

 Seed on Germination and the Subsequent 

 Growth of the Seedlings (paper) 223-237 



Effects of Heat on Trichinae (pajjer) 201-221 



Emery, James A., and Henley, Robert R. 

 (paper): Meat Extracts, Their Composition 

 and Identification 1-17 



Errata and authors' emendations iii 



Euchlaena — 

 alicoles — 



separate 128-133 



two-ranked 128-130 



spikelets single 128-133 



Euchlaena inexicana — 

 structure of ear of Zea mays compared to. 127-135 

 pistillate inflorescence of 127-135 



Ether, "derrid" insoluble in 179 



Ewes' milk, quantity and composition of . . . . 19-32 



Extracts, meat. See Meat extracts. 



False cabbage aphis. See Rkvpalosiphum 

 pseudobrassicae. 



False turnip aphis. Rhopalosiphum pseudcf- 

 brassicae. 



Fertilization, in plum, limiting factors 1 18-124 



Foliage inoculations with mosaic 253-255 



Folsom, Donald, et al. (paper): Investiga- 

 tions on the Mosaic Disease of the Irish 

 Potato 247-274 



Formaldehyde vapor, seed disinfection by . . . 33-39 

 Free-reducing substances, loss from sweetcorn 

 during storage 142-152 



Page 



Frequency distributions for variation in milk 

 yield 287-321 



Fruit buds of lemon, seasonal distribution of 154-156 



Fruit- 

 lemon — 



relation to flowers 153-165 



time required to mature 161-163 



setting of, in plum 105-123 



Fusarium vasinfeclum, on seeds, use of formal- 

 dehyde vapor against 36 



Germination, camphor seed, effect of — 



drying 226 



fermentation 226. 237 



freezing 224-237 



heat 226, 237 



picking from ground 224-237 



removing the pulp 223-237 



soaking in sulphuric acid 226, 237 



soaking in water 224. 237 



time of planting 225. 237 



Glacial acetic acid, "derrid" soluble in 179 



Grafting, transmission of mosaic by 251-253 



Green apple aphis. See Aphis pomi. 



Green peach aphis. See Myzus persicae. 



Green potato aphis. See Macrosiphum solani- 

 folii. 



Hartman, R. E., and Johnson, James (paper): 

 Influence of Soil Environment on the Root- 

 rot of Tobacco 4 1-86 



Hawkins, Lon A., et al. (paper): Investiga- 

 tions on the Mosaic Disease of the Irish 

 Potato 247-274 



Heat- 

 effect on — 



toxity of Derris extract 182-184 



trichinae 201-2? i 



See also Temperature. 



Hemerocampa leucostigma, toxity of Derris 

 to 182-200 



Henley, Robert R., and Emery, James A. 

 (paper): Meat Extracts, Their Composition 

 and Identification 1-17 



Higgins, C. H., and Stevens, Neil E. (paper): 

 Temperature in Relation to Quality of 

 Sweetcom 275-2S4 



Hildebrandt, F. Merrill, et al. (paper): 

 Investigations on the Mosaic Disease of the 

 Irish Potato 247-.; 74 



Hill selection, effect upon mosaic of Solanum 

 tuberosum 267-370 



Histological examination for Bacterium 



abortus 242-246 



Histological methods of tracing Derris 



poison 197-199 



Honeybee. See A phis mcllifica. 



House flies. See Musca domestica. 



Hybrids, Zea-Euchlaena, structure of ear. . 127-135 



Hyphanlria cunea, toxity of Derris to 182-200 



Iddings, E. J., and Neidig, Ray E. (paper): 

 Quantity and Composition of Ewes' Milk: 



Its ReUtion to the Growth of Lambs i9-3» 



Illinoia, sp., toxity of Derris to 190-200 



Inflorescence — 



lemon, size and productiveness of 156-160 



maize ear, structure of 127-13S 



