162 HOW CROPS GROW. 
White Prince's Axbridge Magpie. Forty-fola. 
Apple. Beauty. Kidney. 
POURS sisi one e'e'sia 69.7% 65.2 70.6 70.0 62 1 
Chloride of Sodium.—— —— — —_—- 25 
MONTE geleratatsls 6jaic sisi e's 3.0 1.8 5.0 5.0 3.3 
Magnesia........... 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 U5 7.9 
PETC ete <iciewsele «5 —— — 0.2 — — 
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, (Zrans. 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. Roy. Ag. Society, 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 oats. Heavy oats, 
OUAE LN cats /aatatelotareiels 9.8 13.1 
BOdD sc cacis sclera s te 4.6 7.2 
NGNINY Gsietore disiete’ece olorwie 6.8 4.2 
Phosphoric acid... 9. 17.6 
PIULICD es elute crciaisis eis 56.5 45.6 
Wolff, (Jour. fir Prakt. Chem., 52, p. 103,) has anak 
© Thickly covering with sediment from muddy tide-water. 
