200 CULTURE OF THE GRAPE. 



of an ox, prepared by M. Berzelius. He found 100 parts 

 of these bones consisted of 



Cartilage 33.30 



Phosphate of Lime 55.35 



Fluate of Lime 3.00 



Carbonate of Lime 3.85 



Phosphate of Magnesia 2.05 



Soda, with a little common Salt 2.45 



100.00 



These are precisely what is wanted as food ; and hence 

 the testimony as to the value of this fertilizer is uniform 

 and decided, as we might expect. In the purchase of this 

 article, there is always considerable shrinkage from the 

 above analysis, resulting from the usual processes in 

 reducing the bone to powder. It is, however, most eco- 

 nomical to purchase it in this form, in order to secure 

 immediate results. For ordinary field -crops, English 

 cultivators use, as the only fertilizer, from fifteen to forty, 

 and even eighty, bushels per acre. In regard to the an- 

 nual amount for a dressing to the vineyard, no definite 

 rule can be given, as the various soils have different neces- 

 sities. We may bear in mind, however, that any reasona- 

 ble amount of bone-dust is a safe fertilizer, and that, 

 where table-grapes, in large quantity and of superior size, 



