1919] CONTENTS. XVIT 



Busck, A., A Microlepidopteran Injurious to Avocado 460 



Caffrey, D. J., The European Corn Borer Problem 257 



Campbell, R. E., A Suggestion of a Possible Control of Pea and Bean 



Weevils 759 



Carrier, L., A Reason for the Contradictory Results in Corn Experiments- 436 



Carrier, L., American Husbandry, a Much Overlooked Publication 527 



Caudell, A. N., Palinodes proostans and Its Prey 252 



Chapman, H. H., The Development of a Brush-Disposal Policy for the 



Yellow-Pine Forests of the Southwest 839 



Chase, A., Axillary Cleistogenes in Some American Grasses 635 



Chittenden, P. H., Control of Plant Lice or Aphis 255 



Chittenden, F. H., The Striped Cucumber Beetle and Its Control 259 



Christie, G. I., The Farm Labor Outlook for 1919 889 



Clark, W. M., A Study of the Eye Formation of Emmental Cheese 873 



Cohen, B., and W. M. Clark, The Growth of Certain Bacteria in Media 



of Different Hydrogen-ion Concentrations 410 



Collins, G. N., Structure of the filaize Ear as Indicated in Zea-Euchlsena 



Hybrids___^ 436 



Collins, G. N., A Fossil Ear of Maize 530 



Cohins, \V. D., Acid Test on Enamel Ware. 314 



Cook, L. B., The Consumption of IMilk in the United States 774 



Cook, O. F., Evolution through Normal Diversity 522 



Cook, O. F., Olneya Beans 834 



Cook, O. F., Domestication of Animals in Peru j. 869 



Cotton, W. E., Abortion Disease of Cattle 479 



Cushman, R. A., New Genera and Species of Ichneumon Flies 261 



Dana, S. T., Public Control of Private Forests in Norway 243 



Davidson, W. M., The Convergent Ladybird Beetle {Hippodainia cotv- 



vcrgens) and the Barley Corn Aphis (ApJiis maidis) 62 



Davidson, W. M., Notes on AUograpta fracta (Diptera: Syrphidse) 852 



. Davis, J. J., Grasshopper Control in Indiana 162 



Davis, J. J., The Value of Crude Arsenious Oxid in Poison Bait for Cut- 

 worms and Grasshoppers 251 



Davis, J. J., Miscellaneous Aphid Notes, I 850 



Davis, L. M., Marketing Problems of the Milk Producer 183 



Davis, L. M., Field Surveys and Dairy Marketing Investigations 183 



Davis, L. M., A Survey of the Dairy Marketing Conditions and Methods 



in New Hampshire , 183 



Demuth, G. S., The Maintenance of Colonies from the Close of the Honey 



Flow One Tear until Its Beginning the Next 359 



Denton, M. C, Changes in Food Value of Vegetables Due to Cooking 667 



Detwiler, S. B., Status of White Pine Blister Rust Control in 1918 851 



Dorset, M., C. N. McBryde. W. B. Niles, and J. H. Rietz, Studies on the 



Hyperimmunization of Hogs Against Hog Cholera 286 



Dorset, M., C. N. McBryde, W. B. Niles, and I. H. Reitz, Observations 



Concerning the Dissemination of Hog Cholera by Insects 578, 777 



Downing, F. P., Standardizing the Hamper 443 



Downing, F, P., Berry Boxes and Fruit Baskets 443 



Eaton, F. M., Efficiency in Citrus Irrigation 741 



Edwardes, V. P., Hemlock Bark as a Source of Tannin 509 



Emery, J. A., and 11. R. Henley, Meat Extracts, Their Composition and 



Identification 113 



177848°— 20 2 



