A SUMMARY OF RIiCENT AMERICAN AVORK OX FEEDING 



STUFFS. 



By C. F. Langworthy, Ph. I)., 

 Office of Experiment Stations, U. S. Department of Agriculture. 



The general subject of feeding stufl's, inolucUng composition, digest- 

 ibility, feeding value, sophistication, manufacture, value for specific 

 purposes, and related topics, has always received much attention at the 

 hands of American investigators, especially those connected with the 

 agricultural experiment stations. In recent j^ears the amount of sucb 

 work by station investigators has been materially increased by the fact 

 that a number of States have laws regulating the manufacture and 

 sale of feeding stuffs, and in the majority of cases the analytical work 

 and other matters, necessitated by these laws, are intrusted to station 

 officials. 



In preparing the following summary of American work on feeding 

 stuffs, published during the last three and a half years, the bulk of the 

 data has been obtained from matter included or referred to in the 

 Experiment Station Record, since in this journal all the experiment 

 station literature is regularly noted and an attempt is made to include 

 all other American work as well. In the case of many experiment 

 station })ublications the date of distribution is difficult to determine 

 and does not agree with the printed date of issue. It has been 

 assumed, therefore, that any matter noted in the Experiment Sta- 

 tion Record, Volumes XII to XIV, inclusive, and numbers 1 to 6 

 of Volume XV, that is, from September, 1900, to February, 1904, 

 comes within the period which it is desired to cover. No account has 

 been taken of the considerable number of short articles on the composi- 

 tion and value of feeding stuffs contributed to agricultural papers and 

 other journals by experiment station authors. The amount of such 

 material is large and, taken together, it represents a contribution to the 

 su})ject which is of considerable importance from an educational and 

 practical standpoint. Furthermore, mention has not been made of the 

 considerable number of general discussions of feeding stuffs prepared 

 by station officials and published in the station bulletins and reports, 

 or those prepared in the Department of Agriculture and published as 

 farmers' bulletins. 



S. Doc. 148, 58-2 .S:i 513 



