ANALYSIS OF WOOD AND SEED. 



349 



The sediment found during fermentation contained in its 

 air-dry state 56.78 per cent of potassium oxide, and, at 100° 

 to 110° C, 4.6 per cent of moisture. 



IV. 



Ash Constituents of the Wood. 



One year old wood of the Concord grape-vine furnished in 

 its air-dry state 2.969 per cent of ash. One hundred parts 

 of the ash contained the following relative proportions of the 

 essential mineral elements of plant-food : — 



Analysis of the Seed. 



One hundred parts of air-dry seeds of the Concord grape, 

 which lost, at 100° to 110° 1', 6.18 per cent of moisture, con- 

 tained 1.081 parts of nitrogen, and left by calcination 3.076 

 parts. The ash contained, in one hundred parts : — 



VI. 



Analysis of the Grape Skins and Pulp. 



One hundred parts of air-dry skins and pulp left, after the 

 juice had been removed, .91 per cent of ash ; they contained 

 1.625 per cent of nitrogen, and left, at .100° to 110° C, 8.5 

 per cent of moisture. One hundred parts of the ash con- 

 tained : — 



