198 



1.GRICULTURAL TEXT-BOOK. 



42.80 

 5.54 



42.40 

 1.68 



7.58 



n. 



49.93 

 5.61 



42.20 

 1.68 

 7.58 



Carbon, 



Hydrogen, 



Oxygen, 



Nitrogen, 



Ash, 



438. Water (A;) solid matter (B) and ash(C ;) 100 parta 

 in moist state in turnips, grown in four different localities in 

 Scotland. (Dr. Anderson.) 



White Globe Turnips (a,) - 9318 



do do (6.) . . 92.85 



do do (c,) 94.03 



Swedes, do (&amp;lt;/,) - 90.07 



439. Inorganic analysis of the same turnips. (Dr. Ander 

 son.) 



B. 



6.82 

 7.15 

 5.97 

 9.91 



C. 



0.67 



078 



0.69 



0.57 



The proportion of nitrogen in healthy turnips varies within 

 extremely wide limits, and that -without any assignable cause. 

 In two of the above specimens the nitrogen was respectively 

 3.81 and 2.54. By comparing the analyses of other chemists 

 the nitrogen may be averaged from 1.65 to 4.31, equivalent to 

 2.00 and 5.22 of Ammonia. From these facts we learn that 

 this plant varies not only in its agricultural requirements but 

 also greatly in its nutritive powers ; and that one ton of turnips 

 may be capable of forming as much flesh, as two and a half 

 tons grown on a different soil. Dr. Anderson places the aver 

 age of the flesh-forming matter in turnips as low as 1.27 in 100 

 parts of the fresh substance. The phosphates vary in a like 

 manner. In 12 analyses of turnips of two varieties, grown on 

 different soils, and with different manures, these varied from 



