EEPORT OF THE SECRETARY. 199 



insecticides which contained some active ingredients were adulterated 

 by the addition of inert substances for the purpose of increasing the 

 bulk to such an extent that they were of no value whatever. 



As a result of the data secured by these investigations an insecti- 

 cide and fungicide law was passed and approved April 26, 1910, 

 which has greatly improved the conditions. Now it is a violation of 

 law to ship in interstate commerce for sale any insecticide or fungi- 

 cide which is adulterated or misbranded in any particular. A farmer 

 in buying a supply to protect his crops can be reasonably sure he is 

 getting exactly what he asks for and what he pays for. The insecti- 

 cide laboratory of this bureau does a large part of the analytical 

 work on the samples collected for the enforcement of the law. This 

 laboratory, which conducted the investigations previous to the enact- 

 ment of the law, did valuable pioneer work in developing methods for 

 the analysis of these products. No methods of analysis had ever been 

 worked out for many of the insecticides. 



co:mmercial feeding stuffs. 



An exhaustive study of the various feeding stuffs on the market 

 was completed in 1908, and the results published in Bulletin 108. 

 This study furnished valuable data for the information of purchasers 

 of feeding stuffs and for further studies of the nutritive value of 

 the various materials used for stock foods. It also furnished infor- 

 mation that has l^een of great value in the enforcement of the provi- 

 sions of the Food and Drugs xVct of June 30, 1906, which apply to 

 these products. A study of the feeding value of various cereals was 

 made and the results published in Bulletin 120. The chemical data 

 secured from this investigation has been of value in agricultural 

 studies of the best methods for increasing the nutritive value of vari- 

 ous grains. 



FARM PRODUCTS AND WASTES IN MANUFACTURING INDUSTRIES. 



From an economical standpoint the investigations of the Bureau 

 of Chemistry relating to the utilization of farm products for paper 

 making, tanning, denatured alcohol manufacture, turpentine and 

 rosin industries, and the destructive distillation of wood products 

 are of the utmost practical importance not only to the farmer, but 

 also to the manufacturer and to the consuming public. 



PAPER AND LEATHER MAKING MATERIALS. 



In no industrial enterprise is there greater opportunity for con- 

 servation than in those agricultural-chemical industries, tanning and 

 paper making. Not only are large quantities of raw materials totally 

 unused, but those which are consumed are not so fashioned that 



