INDEX. 



Hickory — 



aphis, little, history, description, life cycle, injuries, 100, 26-34. 



trees, infestation by walnut aphides, California, 100, 19-20, 27. 

 Hive temperatures, fluctuations, causes, experimental observations, 96, 22-26. 

 "Holder" system, pasteurization of milk and cream, 85, 1-2. 

 Honey plant, udo, 81, 4. 



Honeybee cluster, temperature in winter, 93, 1-16. 

 Honeybees. See Bees. 



Honeydew honey, food for bees, disadvantages, 93, 12, 13. 

 Hybrids, oat varieties, tests (with commercial varieties), 99, 1-25. 

 Hydnum erinaceus, injury to oaks, 89, 4. 

 Hydrocyanic-acid gas, use against rose aphis, note, 90, 15. 



Ice — 



and salt mixtures, temperature of different proportions, 98, 14-17. 



bunkers, management in cold-storage room, 98, 17-20. 

 Idaho — 



agricultural extension work, 1913, statistics, 83, 34-40. 



farmers' institute work, officials, statistics, 83, 5-6, 20, 25, 26-32. 

 Illinois — 



agricultural extension work, 1913, statistics, 83, 34-40. 



farmers' institute work, officials, statistics, 83, 5-6, 20, 25, 26-32. 



McLean, test of oat varieties, 99, 4-7. 

 Indiana- 

 agricultural extension work, 1913, statistics, 83, 34-40. 



experiment station, tests of oat varieties, 99, 22. 



farmers' institute work, officials, statistics, 83, 5-6, 20, 25, 26-32. 

 Insect — 



damage to cones and seeds of conifers, character, cause, etc., 95, 2-4. 



damage to cones and seeds of Pacific coast conifers, 95, 1-7. 



enemies of walnut aphides, 100, 35-40. 

 Insecticides — 



use against walnut plant lice, experiments with different kinds, 100, 40-45. 



use in control of tobacco wireworm, 78, 25-28, 29. 

 Insects — 



damage to seeds and cones of conifers, preventive methods, 95, 6-7. 



seeds and cones of conifers, life habits, peculiarities, 95, 5-6. 

 Insulation — 



cold-storage, methods, materials used, etc., 98, 49-57. 



cold-storage plants, economics, cost, etc., studies, 98, 51-57. 

 Iowa — 



agricultural extension work, 1913, statistics, 83, 34-40. 



experiment station, tests of oat varieties, 99, 7-11. 



farmers' institute work, officials, statistics, 83, 5-6, 20, 25, 26-32. 

 Irrigation, use of flume water, suggestions, note, 87, 26. 

 Italy, agricultural extension work, note, 83, 17. 



Japanese vegetable, udo, experiments, 84, 1-15. 



Johnson, seed treatment for potato powdery scab control, note, 82, 12. 



Johnson, W. G., tobacco wireworm, notes, 78, 4, 13. 



Kainit — 



optical constants, 97, 10. 



use in tobacco wireworm control, 78, 27. 



