CONTENTS. 



Page. 



Object of the investigation 7 



Grapes grown in Ohio and New York 8 



Methods of obtaining samples 8 



Preparation of the sample for analysis ". 9 



Tests and analyses made 10 



Investigation of 1908 12 



Investigation of 1909 13 



Investigation of 1910 14 



Seedlings and unknown varieties 17 



Grapes grown in Virginia, 1908-1910 ' 18 



Tabulation of analytical data on samples collected at Sancluaky, Ohio 20 



Data for 1908 '. 20 



Data for 1909 21 



Data for 1910 27 



Tabulation of analytical data on samples grown and analyzed at Charlottes- 



ville, Va 35 



5 



