DIVISION OF CHEMISTRY. 109 



dnced on the chemical composition of butter, which demand further 

 investigation. 



INVESTIGATION OF MATERIALS USED IN ROAD CONSTRUCTION. 



It is hoped that the investigations conducted in the Bureau of 

 Chemistry in this important line may take first rank among similar 

 investigations in different parts of the world. To this end this labo- 

 ratory should be enlarged and more fully equipped and its working 

 force increased. It is only in this way that the best results can be 

 obtained and applied in the most practical manner. 



COLLABORATIVE WORK WITH OTHER DIVISIONS AND BUREAUS AND 

 WITH OTHER DEPARTMENTS OF THE GOVERNMENT. 



This feature of the work of the Bureau of Chemistry becomes more 

 important each year. Definite arrangements for collaboration are 

 now in force and will, without doubt, be continued for the fiscal year 

 ending June 30, 1903, with the Bureau of Forestry, with the Office of 

 Public Road Inquiries, and with the Division of Entomology. A less 

 definite system of collaboration is also established with the Bureau of 

 Animal Industry and with the Bureau of Plant Industry. It is hoped 

 that all these methods and systems of collaboration will assume defi- 

 nite form so as to secure the highest results more economically. For 

 this purpose, I believe it is the unanimous opinion of all those inter- 

 ested in this collaboration that the appropriations for this work should 

 be made directly to the Bureau of Chemistry instead of to the collab- 

 orating Divisions and Bureaus, and then assigned to the Bureau of 

 Chemistry. 



The collaboration with other Departments of the Government will 

 undoubtedly also be continued and enlarged, as the tendency to the 

 growth of this collaboration has been very great within the past two 

 or three years. Since this collaboration has employed during the past 

 year the time of at least two assistants in the Division, it is evident 

 that a special appropriation should be made covering it. The Depart- 

 ments of the Government interested in this matter will thus be directty 

 benefited and the organic relation of the Bureau of Chemistry of 

 the Department of Agriculture to the general chemical work of the 

 Government be strengthened. 



CLERICAL SERVICES. 



The expansion of the Division of Chemistry into a bureau, enlarg- 

 ing its work and perfecting its affiliations with other Divisions and 

 Bureaus, and with other Departments of the Government, render nec- 

 essary a considerable increase of the clerical force. The work of the 

 Bureau of Chemistry peculiarly demands extra clerical services on 

 account of the large amount of computation and tabulation which it 

 requires, as well as the extensive correspondence involved. Through 

 the courtesy of the Division of Statistics we have had a great deal of 

 help in this line during the past year or two, but it is hardly fair to 

 expect this help to be continued when it should be provided for in the 

 Bureau itself. The organization of two new laboratories and the com- 

 pletion of the equipment of three others, making five in all, also 

 involve a considerable extension of the clerical service. As in the 



