484 
The following table showing the composition of the ash of the differ¬ 
ent parts of the plant is compiled from the numerous tables in the essay 
of Dr. Salisbury: 
A sh of leaves 
August 16th. 
Ashof sheaths 
August 16th. 
f 
Ash of 3talks 
August 16th. 
Ash of roots 
August 2d. 
Ash of kernel 
October 18th 
Ash of cob 
October 18th. 
Carbonic acid. 
3.025 
2.60 
12.05 
not obt’d 
a trace 
9.445 
Silicic acid. 
21.100 
18.20 
4.70 
, 33.25 
0.850 
10-32" 
Sulphuric acid. 
6.22() 
3.01 
5.91 
not obt’d 
0.515 
1.336 
Phosphates... .... 
14.650 
11.20 
11.20 
17/38 
Phosphoric acid. 
49.210 
13.105 
Lime. 
5.347 
0.62 
2.82 
0.56 
0.075 
3.833 
Magnesia... 
. 1.510 
1.02 
1.73 
0.75 
17.600 
6.745 
Pol ash... 
10.170 
10.73 
10.31 
6.94 
23.175 
34.400 
Soda . 
31.390 
32.62 
34.54 
I 22.16 
3.605 
11.495 
Sodium. 
0.160 
Chlorine. 
1.975 
16.42 
9.03 
not obt’d 
0.295 
Organic acids. 
2.800 
3.25 
4.40 
not obt’d 
5.700 
6.430 
Chloride of sodium 
1.980 
Phosphate of per. ox. of iron. 
. 
. 
. 
. 
0.445 
98.187 
99.67 
97.69 
.... 
99.175 
99.543 
In New York premiums have been awarded for large crops of corn, 
and the products of an acre have reached as high as one hundred and 
eighty-two bushels : bnt premium crops are usually not over one hun¬ 
dred and fifty bushels per acre. 
The ‘‘Indian corn hills” found in very numerous localities in Wiscon¬ 
sin, indicate that this has been a favorite grain with aboriginal inhabit¬ 
ants. Their mode of culture was to plant each hill on the same spot 
from year to year, gradually adding to the little mound, until the whole 
surface appears as if covered with ant hills. They are not arranged in 
regular rows ; the Indian mathematics and taste not having reached that 
point. 
The culture of this invaluable grain can be carried on with profit as 
far north as the 51st degree of north latitude, and is planted as low as 
40 degrees south, on the coast of Chili. It attains its greatest perfection 
in the dampest and hottest of the tropical climates.* 
* Richardson Arc. Searching Exp. p. 410 
4 
f 
