222 MASS. EXPERIMENT STATION BULLETIN 280 



One hundred and sixty-six creameries, milk depots and milk inspectors' 

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

 in use. As a result of this inspection, two machines were condemned outright, 

 major repairs were ordered on six, and minor repairs on twenty. Where it is 

 thought necessary, re-inspections will be made. Special investigations were 

 made at ten plants. 



Advanced Registry Testing. (P. H. Smith). Advanced registry testing 

 has been supervised by this department since its beginning in 1902. There are 

 now on yearly test 528 cows located on 67 different farms. This does not include 

 the herd tests where all animals in each herd are placed on test. Of these there 

 are fourteen, two of which are supervised by men sent out from this office and 

 twelve by cow test association supervisors. 



Miscellaneous Work. (P. H. Smith, A. F. Spelman, G. J. Larsinos). Nu- 

 merous analyses have been made for residents of the State and other depart- 

 ments of the College. Especial attention is called to the increasing number of 

 dry matter determinations in connection with forage crop experiments. This 

 work has become a real burden upon other work of the department and should 

 it increase materially, the employment of an additional assistant during the 

 summer months will be necessary. 



Summary of Miscellaneous Wo7k, 1931 



Materials sent in: 



Milk and cream, butterfat only 461 



Milk, solids and fat 4 



Feeds 104 



For other departments of Experiment Station and College: 



Milk, for butterfat 138 



Milk, for solids 10 



Dry matter, forage crops 2,255 



Complete fodder analyses 167 



Dry matter and nitrogen 49 



FERTILIZER CONTROL SERVICE 

 H. D. Haskins in Charge 



Fertilizer Inspection. (H. D. Haskins, H. R. DeRose, A. F. Spelman, 

 G. J. Larsinos, and ,1. B. Zielinski, Jr.). During the season, 125 firms or individ- 

 uals have registered for sale in Massachusetts 589 brands of mixed fertilizers 

 and fertilizing materials and 26 brands of agricultural lime and gypsum. Statis- 

 tics with reference to the inspection of these products are given in the following 

 summar>\ 



The four agents who secured samples of fertilizer and lime for the year's 

 in.spection sampled 24,925 sacks or containers, representing 10,753 tons of 

 material; 873 agents were visited. 



