852 ELEMENTS OF CROPS. 



Carbcn 49.88 



Hydrogen 5.58 



Oxygen 40..')6 



Azote.. 0.30 



Ash..... 3.68 



100.00 



WHITE PEAS 



Raised on manured land yielded 16 buihels per acre, weighing 

 fully 62 lbs. per bushel. One part of peas, after complete desicca- 

 tion, weighed 0.914 ; one part of dried peas left of ash 0.0314 : 



I. n. 



Carbon 46.06 46.94 



Hydrogen 6.09 6.34 



Oxygen 40.53 39.50 



Azote 4.18 4.18 



Ash 3.14 3.14 



100.00 100.00 



PEA STRAW. 



One acre of peas produces about 22 or 23 cwts. of straw ; one part 

 of the straw after desiccation weighed 0.802 ; one part after incine- 

 ration 0.1132 : 



Carbon 45.80 



Hydrogen 5.00 



Oxygen 35.57 



Azote •••• 2.31 



Ash 11.32 



100.0C 



JERUSALEM POTATO OR ARTICHOKE. 



In Alsace, Jerusalem artichokes are always grown on one and 

 the same piece of land, which is manured every two years. At 

 Bechelbronn, on a somewhat shallow soil, the produce per acre 

 amounts to : 



Tubers 10 tons 



Dry stems Hi cwts. 



A tuber which weighed on being taken from the ground 1 oz. 

 IS^nr dwts , weighed ^ dwts. after it was dried in the stove. Afler 

 absolute desiccation, one part was reduced to 0.208 ; one portion of 

 the dry tuber left 0.0594 after incineration : 



n. 



Carbon 4-12 43.62 



Hydrogen 5.91 5.80 



Oxygen 43.56 43.07 



Azote 1.57 1.57 



Ash 5.94 5.94 



100.00 100.00 



DRIED STEMS OF JERUSALEM ARTICHOKES. 



These stems had stood through the winter where they grew, and 

 were almost wholly composed of pith. One part after desiccation 

 weighed 0.871 : one part left of ash 0.0276. 



