534 On the Food of Plants 
20 grains, on analysis, aflorded- 
chloride . . . .j 
Phosphate of potash 
Sulphate of potash . 
Earthy phosphates, with sonic car-1 
bonates of lime and magnesia ) 
Water .... 
111 100 parte. 
7-1 
35 '5 
3*18 
15*9 
4 •12 
23-6 
4-1 
20-5 
0-9 
4-5 
20-0 
100-0 
11. Large Swedish turnip, from Oxfordshire, treated as above. 
Tops : — 
200 grains of dried tops, gave of ash . 2T "3 grains. 
200 „ „ . 26-0 „ 
Or 13-32 per cent. 
20 grains, on analysis, gave- 
III 100 
parts. 
Carbonate of potash, with 
chloride 
little| g 
28 
41 
4 
Sulphate of potasli . 
. 1 
12 
5 
6 
Carbonate of lime . 
. 8 
9 
44 
5 
Earthy phosphates . 
. 0- 
8 
4 
0 
Silica 
. 0 
4 
2 
0 
Water and loss 
. 0 
5 
2 
5 
20 
•0 
100 
•0 
Bulbous portion: — 
500 grains of well dried slices, gave of ash 33*8 grains. 
Or 6-76 per cent. 
20 grains of ash, on analysis, gave — 
Carbonate of potash, with a little) jq.,^ 
chloride ... 
Sulphate of potash . 
Phosphate of potash 
Earthy phosphates, traces of) ^.^ 
iron, &c. . . . . f 
Water 
111 100 parts. 
10-3 
51-5 
2-78 
13-9 
2-12 
10-6 
4-3 
21-5 
0-5 
2-5 
20-0 
100-0 
The large quantity of ash in the potato and turnip tops is con- 
nected with the great surface of these parts, and their great 
transpiratory power. 
These analyses have no pretensions to absolute accuracy, which 
would be extremely difficult to attain with such a complicated 
