AGRICULTURAL TEXT-BOOK. 197 



435. The soil best adapted to this crop contains a small 

 amount of clayey matters, and is characterized by its light, 

 loamy texture. Barley arid Turnips usually prosper well on 

 the same soil. The following are analyses made in Scotland, of 

 two different specimens of good &quot; Turnip soils,&quot; on which such 

 crops had just been grown. (Dr. Anderson.) 



Insoluble silicates, 8789 - 90.695 



Soluble silica, - - - 0.07 - - 0.073 



Peroxide of iron, - 2.94 - 1.333 



Alumina, - 1.59 - - 0.893 



Lime, - 0.38 - 0.319 



Magnesia, - - - 0.13 - - 0.279 



Potash, - 0.14 0.056 



Chloride of sodium, - 0.10 Soda 0.043 



Sulphuric acid, - 0.05 - - 0.039 



Phosphoric acid, - - - 0.04 - 0.018 



Organic matter, - &amp;gt; 4.66 4.996 



Water, - 1.75 1.444 



Chlorine, - \~&quot; trace. 



Nitrogen, - - 0.164 



These analyses, are valuable not only in this peculiar aspect, 

 but as a standard whereby to compare our own soils. They had 

 long been cultivated and highly manured. 



436. The meteorological conditions of the country seriously 

 influence the yield of turnips. Thus Scotland and the West of 

 England, with their greater amount and frequency of rain, pro 

 duce larger crops than the Eastern shores of the same country, 

 (C. W. Johnson;) while in most parts of the United States, 

 we are obliged to sow late to escape the heat, and the roots are 

 very much smaller. 



437. Ultimate ANALYSIS of the Turnip. (Boussingault.) 

 A slice weighing 2 oz. 17 dwts. dried in the stove was reduced 

 to 4 dwte. After thorough desiccation, one part of turnip weighed 

 0.075, consequently the root contains 92.5 per cent of water. 

 One part of dried turnip left 0.0758 of ash : 



