84 INDEX TO YEAKBOOKS, 1901-1905. 



Inoculation with bacterial products, immunity from disease. 1901, 581. 

 Insane, dietary inquiries in New York hospitals, 1901, 402. 

 Insect, damage to cattle, estimates, 1904, 472^73. 



cereal crops, discussion, 1904, 465-468. 

 cotton, 1904, 468^69. 

 forests, estimates, 1904, 471-472. 

 fruits, 1904, 469. 

 hay and forage crops, 1904, 468. 

 stored products, 1904, 473^74. 

 wheat, 1904, 466-468. 

 destroyer, bobwhite, discussion, 1903, 194-199. 

 determinations, remarks, 1902, 88. 

 enemies, cotton boll weevil, studies, 1903, 107. 



forests, coniferous, in United States, article by A. D. Hopkins, 1902, 

 265-282. 

 prime requisites in combating, 1902, 266. 

 grains and forage plants, 1904, 84. 

 enemy of pine trees, remarks, 1902, 85-86. 

 injuries causing death of trees, discussion, 1903, 314-323. 

 distinctive character, 1904, 382-391. 

 forest products, article by A. D. Hopkins, 1904, 381-398. 



trees, discussion, 1903, 313-328. 

 hard-wood trees, article by A. D. Hopkins, 1903, 313-320. 

 round timber, prevention, 1904, 393-394. 

 wood of living trees, discussion, 1903, 323-328. 

 use of top working as relief, 1902, 248. 

 killer, comparison of Mucor with Empusa fungous cultures, 1901, 462. 

 losses, saving by Entomology Bureau, 1905, 82. 

 pests, miscellaneous work, 1904, 83. 

 repression, planting time as factor, 1905, 473. 

 study, value of flowering trees of Japan, 1902, 160. 

 Insecticide and agricultural water laboratory work, 1903; 57. 

 Insecticides, efficiency with fruits, 1903, 556. 



experimental work, 1902, 88; 1903, 79; 1904, 84. 

 in fruit growing, 1904, 175-176. 

 progress, in 1901, 1901, 678. 

 study by Chemistry Bureau, 1902, 79; 1905, 60. 

 Insectivorous birds, protection, 1904, 509-510. 

 Insects affected by contagious diseases, 1901, 459. 

 affecting apple trees, 1901, 603. 



and other invertebrates, food of bobwhite, list, 1903, 204. 

 annual loss from destructive insects, article by C. L. Marlatt, 1904, 461-474. 

 apple tree, 1901, 603. 



as carriers and spreaders of disease, article by L. 0. Howard, 1901, 177-192. 

 beneficial, imported, remarks, 1902, 81; 1904, 81; 1905, 77-78. 

 control, results, 1904, 463-i64. 



cost of protection from damage and disease, 1904, 474. 

 cotton, need of attention, 1903, 106. 



damaging forests, work of Division of Entomology, 1902, 85. 

 to forests, remarks, 1904, 83. 

 study, 1905, 79. 

 destruction by blackbirds, 1904, 248. 



black-headed grosbeak, 1904, 248. 

 destructive, annual loss in United States, article by C. L. Marlatt, 1904, 461-474. 



Hawaii, hindrance to agriculture, note, 1902, 105. 

 disease spreading, remarks, 1905, 80. 



field crop, farm practice in control, article by F. M. Webster, 1905, 465-476. 

 from abroad, work of Division of Entomology, 1902, 80-83; 1903, 73. 

 fruit growing, 1904, 175-176. 

 grape, remarks, 1903, 411. 



household, use of hydrocyanic-acid gas, remarks, 1902, 89. 

 injuries to forest reproduction, article by A. D. Hopkins, 1905, 249-256. 

 injurious, articles by P. H. Chittenden, 1901, 674-679; 1902, 726-733; 1903, 

 563-566; 1904, 600-606. 

 destruction by birds, 1904, 513-514. 

 Hawaii, investigations, 1903, 90. 

 studies, 1901, 515. 



