28 a EXPEIIIMEXT STATION. [Jan. 



A field experiment with bacterized peat, comprising two 

 fields of eight plots each, was continued from the previous year. 

 The purpose of this experiment was the comparison of a mix- 

 ture of bacterized peat with one containing no commercial 

 bacteria. The crops (tomatoes and potatoes) were rotated, 

 the field which was used for potatoes in 1919 being used for 

 tomatoes this season, and vice versa. 



Feed and Dairy Section. 



The Feeding Stuffs Law (Acts and Resolves for 1012, Chapter 

 527). — During the year 1,002 samples of feeding stuffs were 

 collected and analyzed. The results of the year's work, to- 

 gether with a discussion of some feeding problems, have been 

 published as Bulletin No. 13 of the Control Series. The official 

 inspector visited 204 dealers located in 113 towns. One 

 thousand four hundred and sixty brands of feeding stuffs were 

 registered for sale in Massachusetts by 305 manufacturers. 



On account of the greatly increased cost of carrying out the 

 provisions of the feeding stuffs act with no increase in appro- 

 priation, local prosecutions have not been attempted, the 

 Experiment Station continuing to depend upon the co-operation 

 of the Federal authorities for action against violators of the 

 law when the feeds entered into interstate commerce. On the 

 whole, the market, while not entirely free from low-grade 

 material, has been quite free from misrepresentation and 

 fraud. 



The Dairy Law {Acts and Resolves for 1912, Chapter 218). — 

 The dairy law, so-called, requires operators of the Babcock test, 

 where such test is used as a basis of payment for milk or cream, 

 or for the purposes of inspection, to secure a certificate of pro- 

 ficiency from the Experiment Station, Fifty-one applicants 

 were given the required examination and received certificates. 

 The act requires, also, that all glassware used by licensed 

 operators be tested for accuracy, and so marked. Six thousand 

 and eiglit>'-four pieces of glassware have been tested, of which 

 only 13 pieces were condemned. In addition to the preceding, 

 an annual inspection of machines and apparatus is also required. 

 This inspection was carried out by Mr. J. T. Howard, author- 

 ized deputy, who visited 6 creameries, 33 milk depots and 40 



