162 HOW CEOPS GROW. 



WMe Prime's Axbridge Magpie. Forty-fiM. 



Apple. Beauty. Kidney. 



Potash 69.7 65.2 70.6 70.0 63.1 



Chloride of Sodium. ■ • ■ 2.5 



Lime 3.0 1.8 6.0 5.0 3.3 



Maguesia 6.5 5.5 5.0 2.1 3.5 



Phosphoric acid.... 17. 2 20.8 14.9 14.4 20.7 



Sulphuric acid 3.6 6.0 4.3 7.5 7.9 



Silica 0.3 ■ 



d. The soil, or the supplies of food, manures included, 

 have the greatest influence in varying the proportions of 

 the ash-ingredients of the plant. It is to a considerable 

 degree the character of the soil which determines the 

 vigor of the plant and the relative development of its 

 parts. This condition then, to a certain extent, includes 

 those already noticed. 



It is well known that oats have a great range of weight 

 per bushel, being nearly twice as heavy when grown on 

 rich land, as when gathered from a sandy, inferior soiL 

 According to the agricultural statistics of Scotland, for the 

 year 1857, [Travis. Highland and Ag. Soc, 1857 — 9, p. 

 213,) the bushel of oats produced in some districts weigh- 

 ed 44 pounds per bushel, while in other districts it was as 

 low as 35 pounds, and in one instance but 24 pounds per 

 bushel. Light oats have a thick and bulky husk, and an 

 ash-analysis gives a result quite unlike that of good oats. 

 Herapath, [Jour. Hog. Ag. Socletg, XI., p. 107,) has pub- 

 lished analyses of light oats from sandy soil, the yield be- 

 ing six bushels per acre, and of heavy oats from the same 

 soil, after " warping,"* where the produce was 64 bushels 

 per acre. Some of his results, per cent, are as follows : 



Light oafs. Heavy oats. 



Potash 9.8 13.1 



Soda 4.6 7.3 



Lime 6.8 4.3 



Phosphoric acid ... 9 . 7 17 . 6 



Silica 56.5 45.6 



Wolff", {Jour, fur Prakt. Chem., 52, p. 108,) has anal- 



' Thicldy coveriug with sediment from muddy tide-water. 

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