APPLICATION FOR PURE CULTURES OF VINEGAR YEAST 



AND BACTERIA. 



SHOW THIS TO A NEIGHBOR. 



Date 



Name 



Post Office County , 



State R. F. D 



I desire to cooperate with Ihe Bacteriological Laboratory of the Mich- 

 igan Agricultural College in its attempt to produce a better vinegar and 

 to overcome losses by off-fermentations. 



I will endeavor to, 1. carry out instructions carefully, 



2. observe all changes accurately and, 



3. report these changes and results 



as soon as the fermentation is completed by filling out the "Report 

 Blank" sent with the cultures and returning it to the Bacteriological 

 Laboratory. 



Probable date of using cultures 19. . . . 



(Yeast cultures should be ordered one to two weeks before fruit juice 

 is expressed; cultures of vinegar bacteria should be ordered as soon as 

 the alcoholic fermentation is over.) 



I wish 3'east cultures to control the alcoholic fermenta- 

 tion, the first stage of vinegar production, and cultures of 



vinegar bacteria to control the acetic acid fermentation, the second and 

 last stage of vinegar production. 



One culture each of yeast and vinegar bacteria is sufficient for a barrel 

 two-thirds full of freshly expressed fruit juice. If the alcoholic fermen- 

 tation is over (as evidenced by the cessation of foaming) a pure culture 

 of vinegar bacteria alone will be sufficient. 



A nominal charge of 25 cents per culture is made to cover cost of 

 material and shipping. No amount less than a single culture will be 

 sent. Two or more cultures will be forwarded at 25 cents each. 



Enclosed find $ Send money preferably by money order. 



No stamps accepted. 



Address this ai)plication when filled out in a sealed envelope to the 



BACTERIOLOGICAL LABORATORY, 



MICHIGAN AGRICULTURAL COLLEGE, 



East Lansing, Michigan. 



