40 MASS. EXPERIMENT STATION BULLETIN 378 



The following- summary shows the character of these substances, as well 

 as statistics with reference to their inspection; — 



Brands Brands Samples 



Registered Collected Drawn 



Mixed fertilizers 317 328 1,029 



Ground bone, tankage and fish 39 35 133 



Nitrogen products, mineral and organic 47 40 214 



Phosphoric acid products 26 2d 121 



Potash products 21 21 84 



Dried pulverized natural manures 26 26 95 



Nitrate of potash 7 ' 6 18 



Peat products 2 2 3 



Wood and cotton hull ashes 5 5 9 



Miscellaneous 2 2 8 



Lime products 52 44 103 



Totals 544 534 1,817 



Feed Inspection. During the fiscal year 1,628 samples of feeding 

 stuflfs were officially collected and examined in the control laboratories. 

 The gross receipts from the registration of feeding stuffs in 1940 were 

 $25,300, derived from 1,265 brands at $20 each. 



Dairy Law. During the year ending December 1, 1940, 7,838 pieces of 

 Babcock glassware were tested; 93 certificates of proficiency were award- 

 ed; and 235 creameries, milk depots, and milk inspectors' laboratories 

 were visited In order to check methods and to pass upon equipment in 

 use. As a result of this inspection, three machines were condemned. 

 These will be either replaced or put into condition to operate satisfactorily. 



Miscellaneous Analytical Work. (Fertilizer and Feed Laboratory). 

 In addition to the work required by the several regulatory activities under 

 its administration, Control Service is interested in collaborative work 

 with other departments of the Experiment Station and College; the ex- 

 amination of samples of feeds, fertilizers, and other agricultural products 

 submitted by citizens of the State; the testing of feeds and fertilizer 

 bought by State institutions; and investigational work on new methods of 

 chemical analysis for the Association of Official Agricultural Chemists. 



In order to indicate the wide scope of the work, the following statistical 

 data are appended: — 



Apple spray residue 7 



Feeds, from farmers and dealers 63 



Feeds, from State institutions 959 



Feeds and forage crops, Experiment Station 348 



Fertilizer mixtures 40 



Ice Cream 113 



Insecticides and fungicides 7 



Limestone (AAA distribution) 26 



Milk 351 



Peat 11 



Poultry feces (In connection with experiments) 76 



Poultry grits 3 



Poultry manures (Fertilizer) 3 



