CULTURE OF THE GRAPE. 197 



Wood. Bark. 



Potash 20.84 1.77 



Soda 2.06 0.27 



Clorine 0.02 0.40 



Sulphuric Acid 23 trace. 



Phosphate of Lime 15.40 5.04 



Phosphate of Per-oxide of Iron .... 1.20 5.04 



Carbonic Acid 34.83 32.22 



Lime 17.33 39.32 



Magnesia 4.40 0.80 



Silex 2.80 14.00 



Soluble Silica 0.00 0.30 



Coal, and Organic Matter 2.20 1.70 



100.21 



100.86 



It will be noticed that the percentage of carbonic acid 

 given by Dr. Eininons is quite large, while the percentage 

 of potash is correspondingly small. The difference be- 

 tween the hard, firm growth of Burgundy wood and the 

 more succulent wild vine will account for the variation 

 to some extent. In all other analyses which I have seen, 

 the amount of sulphuric acid has been considerably larger, 

 varying from 1.5 to 2 per cent. In the fruit, all chemists 

 agree that this amount is considerably increased. Mr. A. 

 J. Downing, in " The Horticulturist," vol. iii. p. 5^6, states, 

 "that, while the analysis of the ashes of the foreign grape 

 shows only about 2 per cent of sulphuric acid, the analy- 



