CONTENTS. 



Page. 



The occurrence of sucrose in grapes 7 



Opinions from the literature on the composition of grapes 7 



Work of 1909 8 



Origin and description of the seedling 8 



Other varieties examined for sucrose 9 



Reexamination of samples 10 



Work of 1910 10 



Check work on the sucrose content of the Sandusky seedling 10 



Notes on samples analyzed for sucrose in 1910 11 



General discussion of results 12 



Detailed statement of analytical data for 1909 and 1910 13 



The sugar and acid content of different varieties of grapes, sampled at frequent 



intervals during ripening and at full maturity 16 



Examinations made during 1909 16 



Examinations made during 1910 18 



Additional varieties examined and then* sampling 18 



Detailed data on total sugar and acid content 19 



Discussion of analytical data 21 



Notes made on samples on the dates of analysis, 1910 22 



Detailed statement of analytical data for 1909 and 1910 24 



5 



