174 



STATE BOARD OF AGRICULTURE. 



Twenty-six out of the 76 samples analyzed were found to be of market 

 standard (4 per cent) or above, while only three were found to be worthless. 

 The remaining 47 samples theoretically would make good vinegar if optimum 

 conditions were provided for the vinegar organisms. 



Several inquiries have been received regarding the preserving of sweet cider. 

 An article, "On Home Preservation of Fruit Juices," was written and pub- 

 lished in the May number of the Michigan Quarterly Bulletin, 1922, in which 

 pasteurization was recommended. 



Silage Poisoniiig: Nine samples of silage, five samples of ground feed, and 

 one each of beet pulp and tankage were received for analysis. These were 

 either suspected of poisoning stock or merely sent in to determine their 

 suitability for stock food. B. botuUmis was not found in any of the samples. 

 Five samples of silage were extremely mouldy and were recommended as 

 undesirable for stock food. 



Flax Retting: Miss A. Trevithick, working under the combined direction of 

 Mr. R. L. Davis, of the United States Department of Agriculture, and myself 

 has made marked progress in developing pure cultures of organisms, capable 

 of retting flax of good cjuality. Miss Trevithick has accepted a position with 

 the United States Department of Agriculture and will continue her research 

 on the pure culture control of flax retting at this Station during the coming 

 year. 



The accompanying table gives data .on food samples analyzed during the 

 past year : 



I have also during the past year made 23 autogenous bacterins for the 

 treatment of boils and chronic infections. Eighty quarts of milk inoculated 

 with Bacillus acidophilus for the treatment of intestinal disorders have been 

 prepared. Very favorable results have l^een reported from both the bacterins 

 and the milk. [Robert L. Tweed.] 



Mr. G. L. A. Ruehle has devoted two-thirds of his time to research and 

 one-third to teaching along lines related to his investigations. His major 

 project is one of fundamental importance to the industry of manufacturing 

 edible fats. 



