1901.] PUBLIC DOCUMENT — No. 33. 11 



Part I. 



LABORATORY WORK. 



Extent of Chemical Work. 



The work of the chemical laboratory connected with this 

 department has materially increased over all previous years. 

 There have been sent in for examination 287 samples of 

 water, 123 of milk, 888 of cream, 20 of pure and process 

 butter, 29 of oleomargarine, 123 of feed stuffs and 10 of 

 vinegar. In connection with experiments by this and other 

 divisions of the station, there have been analyzed 45 samples 

 of milk and cream, 60 of butter and 695 of fodders and feed 

 stuffs. 



In addition to the above, 707 samples of commercial con- 

 centrated feed stuffs have been collected under the provision 

 of the feed law, and tested, either individually or in com- 

 posite; and 40 tonics, condimental feeds, etc., have been 

 examined. This makes a total of 3,036 substances analyzed 

 during the year, as against 2,045 last year and 1,875 in the 

 previous year. 



Character of Chemical Work. 

 Water, Milk, Cream, Feed Stuffs, etc., sent for Exam- 

 ination. — More than the usual number of samples have 

 been received during the year. Sanitary examinations of 

 water have been carried on as in previous years, according 

 to the Wanklyn process, to determine its general fitness for 

 domestic purposes and for live stock. In milk analysis, 

 the percentages of total solids and fat are the usual ones 



