| Departments | Bureaus | ||
| I. | War | 1. | Corps of Engineers |
| II. | Navy | 2. | Hydrographic Office |
| 3. | Naval Observatory | ||
| III. | Interior | 4. | General Land Office |
| 5. | Geological Survey | ||
| 6. | Reclamation Service | ||
| IV. | Agriculture | 7. | Weather Bureau |
| 8. | Bureau of Animal Industry | ||
| 9. | Bureau of Plant Industry | ||
| 10. | Forest Service | ||
| 11. | Bureau of Chemistry | ||
| 12. | Bureau of Soils | ||
| 13. | Bureau of Entomology | ||
| 14. | Biological Survey | ||
| 15. | Bureau of Statistics | ||
| 16. | Office of Experiment Stations | ||
| 17. | Office of Public Roads | ||
| V. | Commerce and Labor | 18. | Bureau of Corporations |
| 19. | Census Bureau | ||
| 20. | Coast and Geodetic Survey | ||
| 21. | Bureau of Fisheries | ||
| 22. | Bureau of Standards | ||
| 23. Smithsonian Institution | |||
Half of the official bureaus (much more in effective strength) belong to the Department of Agriculture. This department was designed and is maintained expressly to increase and diffuse knowledge concerning the natural sources of power and prosperity; and it is significant that more than three quarters of the investigative work of the federal government has either grown up in or gone over to the youngest two departments of the federal organization, of which the last formed is essentially commercial.
The federal bureaus are supplemented by corresponding instrumentalities in most of the states, with which there is large and rapidly growing cooperation. The spirit of the work arises chiefly in, and is largely guided by, some score of voluntary associations, with an aggregate membership of several thousand, including most of the investigators for the state and federal agencies. On the whole, the state agencies are of the greater magnitude and the more largely devoted to applications, the federal agencies the more largely devoted to investigation; the latter seem to be growing the more rapidly to meet a strong demand for effective cooperation with states and associations. The most rapid growth is that of the voluntary associations, of which an increasing proportion are devoted to the application rather than to the increase of knowledge; while the growth of the investigative
