COMPOSITION OF DIFFERENT GRAPES. 



355 



CO.] 



Ash Analysis: I. — Of the Uncultivated Wild Grape. 

 Cultivated and Fertilized Wild Grape. 



n. - Of the 



n. 



Potassium oxide 

 Sodium oxide . 

 Calcium oxide (lime) 

 Magnesium oxide 

 Ferric oxide 

 Phosphoric acid 

 Insoluble matter 



02.65 

 85 



14 24 

 3.92 

 0.53 



13.18 

 4.0:J 



The difference in the ash constituents of the fertilized and 

 the unfertilized vines is as marked as are the organic ele- 

 ments. - , 



To determine the composition of the various hinds of 

 grapes, the following analyses were made during the seasons 

 of 1876 and 1877. The specimens for these tests were ob- 

 tained, with a few exceptions, from the college vineyard. 



Hartford Prolific. 



Ives Seedling. 



Sept. 6 



1.07 26° 79.85 I 20.15 ! 15.15 75.11 8.86 



Iona. 



Sept. 



1.08 



21° 75.11 ! 24.56 15.15 61.68 



114.00 



Iona (Milde iced ) . 



Sept. 7 



1.045 26° : 85.59 15.41 



6.25 40.56 204.40 



A gave am. 



Sept. 11 



1.075 ! 20° 79.21 ! 20.79 17.24 82.92 94.80 



