68 HATCH EXPERLA[ENT STATION. [Jan. 



its sanijilcs regularh', and others send occasional lots, when 

 not in condition to satisfactorily perform the work, or when 

 desirinof to check their own results. A charo-e is made in 

 such cases sufficient to cover the cost of the work. 



Farmers and grain dealers are constantly sending samples 

 of feeds for examination, to determine their value and 

 whether they are as represented. This work takes consid- 

 erable tunc, but it is worthy of encouragement. It must 

 not be understood, however, that the station furnishes a free 

 chemical laboratory for jol:>bers and manufacturers who wish 

 to ascertain the composition of their feeds for commercial 

 purposes. The station does not solicit work of this charac- 

 ter, but is willing to undertake a limited amount for a rea- 

 sonable compensation. 



5. Special Chejiical Work. 



During the year the department has undertaken co-opera- 

 tive work on chemical methods in connection with the Asso- 

 ciation of Official Agricultural Ohcmists, and has studied 

 particularly methods for the determination of sulphur in 

 organic substances, and of nitrogenous compounds in cheese. 

 The department has also co-operated Avith the dei)artment of 

 botany in ascertaining the amount of starch and sugars in 

 cucumber leaves, grown under definite conditions. 



H. Feed Control (Acts of 1903, Chapter 202). 



The several provisions of this act have been executed as 

 heretofore. Bulletin No. 101, containing the analyses of 

 oO(^ samples of feeds collected the previous autumn, was dis- 

 tril)uted early in January of 1905. This bulletin also con- 

 tained many remarks and suggestions on the nutritive and 

 commercial values of concentrates. Bulletin No. 10(5, sent 

 out in October, 1905, gave the chemical and microscopic 

 analys(^s of (i5 samples of condimcntal stock and poultry 

 foods, and the results of an experiment with Pratt's food. 

 During the months of January, February, March and April, 

 the inspector twice visited the most iinpoi-tant cities and 

 towns in the State, and collected 481 samples of feeds. The 

 entin; collection was tested during the late spring and early 



