3QO COMPOUND PRODUCTS, CHAP. I. 



Oxygene 64*7 



Carbon 27'5 



Hydrogene 7'8 



Total 100-* 



Plpt But although the Sugar-cane is here specified as 



sugar! Rg the plant from which sugar is obtained, it is by no 

 means the only plant from which it may be ob- 

 tained. The juice of the Acer saccharinum, or 

 American Maple, yields it in such considerable 

 abundance as to make it an object with the North 

 American farmer, to manufacture it for his own use. 

 A hole is bored in the trunk of the vegetating tree 

 early in the spring, for the purpose of extracting 

 the sap ; of which a tree of ordinary size, that is, of 

 from two to three feet in diameter will yield from 

 one hundred and fifty to two hundred pints and up- 

 wards in a good season. The sap, when thus obtain- 

 ed and neutralized by lime, deposits by evapora- 

 tion crystals of sugar in the proportion of about a 

 pound of sugar to forty pints of sap.~j~ It is not 

 materially different in its properties from that of the 

 Sugar-cane. 



The juice of the Grape, when ripe, yields also a 

 sugar by the evaporation and the action of pot-ashes, 

 which is known by the appellation of the Sugar of 

 Grapes, and has been lately employed in France as 



* System of Chcm. vol. iv. -f- Amer. Trans, vol. iii. 



