191SJ CONTENTS. XXIH 



Page. 

 Gibson, E. H., and Wells, Emma, Genus Ophiderma (Membracidse : 



Homoptera) 764 



Gibson, E. H., and Wells, Emma, Key to Species of the Genus Ceresa 



Occurring North of Mexico, and Description of a New Species 858 



Gillespie, L. J., and Hurst, L. A., Hydrogen-ion Concentration Measure- 

 ments of Caribou Loam and Washburn Loam 620 



Girault, A. A., New Chalcid Flies, with Notes 565 



Girault, A. A., [New Ichneumonoidea] 565 



Girault. A. A., Three New Chalcid Flies from North America 565 



Girault, A. A., Miscellaneous Chalcid Flies ( Hymenoptera ) 661 



Girault, A. A., New Australian Chalcid Flies 768 



Girault, A. A., North American Species of Trigonoderus, Females 768 



Girault, A. A., Parasitic Hymenoptera 768 



Goldbeck, A. T., Influence of Total Width on Effective Width of Rein- 

 forced Concrete Slabs 289 



Goldbeck, A. T., Fi-iction Tests of Concrete on Various Sub-ba.'^es 290 



Gore, H. C, Potato Utilization Possibilities 207 



Hansen, A. A., A Striking Reproductive Habit 446 



Hansen, A. A., Petalization in the Japanese Quince 446 



Harris, J., Brown, N. C, and Tryon, H. H., Wood Utilization Directory of 



New York 146 



Harvey, R. B., Method for Producing Conductivity Water Suitable for 



Water Culture Experiments 26 



Harvey, R. B., and True, R. H., Influence of Light and Chlorophyll For- 

 mation on Toxic Concentration of Magnesium Nitrate for the Squash 224 



Hawkins, L. A., and Stevens, N. E., Endothia Pigments, I 225 



Heald, F. E., School Agriculture and Community Service 93 



Hedgcock, G. G., and Hunt, N. R., Notes on Razoumofskya campylopoda 253 



Holland, R. A., Heronry at Walker Lake 556 



Howard, L. O., Second Importation of European Egg Parasite of the ELm 



Leaf Beetle : 62 



Howard, L. O., Relation of Insects to Disease in Man and Animals 358 



Howard, N. F., Poisoned Bait for the Onion Maggot 863 



Howard, N. F., Insecticide Tests with Diabrotica vittata 864 



Husraann, G. C, Currant Growing an Important, Promising Industry for 



California 346 



Hyslop, J. A., Phylogeny of the Elateridae Based on Larval Characters— 564 

 IngersoU, E. H., Modification of the Price Method for the Separation 



of the Permitted Coal-tar Colors to Include Tartrazin . 12 



Jamieson, G. S., Determination of Arsenic in Insecticides by Potassium 



lodate 804 



Jensen, C. A., Relation of Soil Moisture to Orange Growth 541 



Jodidi, S. L., and Kellogg, E. H., Application of the Paper Pulp Filter to 



the Quantitative Estimation of Calcium and Magnesium 506 



Jodidi, S. L., and Kellogg, E. H., Simple, Efficient, and Economic Filter; 

 Its Application to the Filtration of the Yellow Precipitate in Phosphoric 



Acid Estimations 506 



Johnson, H. M., Alnus oregona: Its Value as a Forest Type 349 



Jones, T. H., Fungu.s-growing Ant in Louisiana 564 



Kelly, E. O. G., Biology of Coelinidea meromyzce 566 



Kempton, J. H., Endosperm Color and Albinism in Maize 28 



Kiernan, J. A., Eradication of Tuberculosis from Cattle and Swine 686 



Knab, F., Carlos Finlay on the. House Mosquitoes of Havana 580 



