CONTENTS. 



Page. 



Introduction 7 



Testing pure yeasts 7 



Culture flask 8 



Record sheet 11 



Discussion of the tests 12 



Growth of yeast in sterilized and unsterilized juice 13 



Effect of varying quantities of yeast on rapidity of fermentation 15 



Pure yeasts used separately and in mixed cultures 18 



Miscellaneous analyses of fermented musts 20 



Descriptive list of yeasts and other organisms 25 



5 



