VI CONTENTS. 



Report of the Chemist — Continued. Page. 



Sea foods 269 



Poultry and oj^gs 270 



Dairy products 271 



Beverages '. 272 



Flour and cereals 272 



Food flora, spoilage, and fermentation 272 



Plant chemistry 273 



Drugs and pharmacology 274 



Insecticides and fungicides 275 



Dehydration of fruits and veget?bles 277 



Color investigations 278 



Leather and tanning 279 



Plant dust explosions and fires 280 



Paper, containers, and fabrics 281 



Naval stores 283 



Methods and apparatus 283 



Analytical work for other departments and bureaus 283 



Report of the Chief of the Bureau of Soils 285 



Introduction 285 



Soil Survey 285 



Chemical investigations 291 



Soil physics 292 



Fertilizer resources investigations 293 



Fertilizer control 293 



Report of the Entomologist 307 



Cereal and forage crop insect investigations 307 



Stored-product insect investigations 311 



Deciduous-fruit insect investigations 312 



Vegetable and truck crop insect investigations 31 8 



Investigations of insects affecting forest resources 321 



Work on the gipsy moth and the brown-tail moth 326 



Southern field-crop insect investigations 329 



Insects affecting the health of man and domestic animals 334 



Tropical and subtropical fruit insect investigations 337 



Bee-culture investigations 339 



Report of Chief of Bureau of Biological Survey 343 



Work of the Bureau of Biological Survey 343 



Economic investigations 344 



Biological investigations 361 



Big-game and bird reservations 366 



Migratory-bird treaty and Lacey acts 372 



Reindeer industry and fur bearers of Alaska 378 



Report of the Chief of the Division of Accounts and Disbursements 379 



Character of work 379 



Work of the year 379 



Report of the Chief of the Division of Publications 383 



All informational work of the Department placed under the Di\dsion of 



Publications 383 



Output of the year 383 



The appropriation for printing and binding 384 



Printing done outside the Government Printing Office 384 



Publication of scientific and technical papers in outside publications 385 



Congressional restriction on periodicals and field printing 386 



Contacts with the press 387 



