EXPERIMENT STATION REPORTS. 241 



for exhibition pui*pose.s. The Missaukee and Lenawee county agents 

 only, toolc advantage of this offer. 



Cultures have been sent gratis to the Bacteriological department of 

 the University of Wisconsin, to the Edwards Laboratories, Lansing, 

 to a teacher of biology and botany in a township high school at Noko- 

 mis, Illinois, to the American Museum of Natural History, New York 

 City to tlie Botany department at Washington State College, Pullman, 

 and to the Botany department of New Hampshire College at Durham. 



Many times, however, requests were received for cultures but the 

 content of the letter showed that the fermented cider should have been 

 converted naturally into vinegar many months or perhaps years pre- 

 viously' and thus the effect from using pure cultures would be doubtful. 

 An analysis of such vinegars was advised before cultures could be 

 recommended. 



Thirty-nine samples of vinegar were tested as follows: 



31 



