266 MINERAL SUBSTANCES IN ORGANS OF PLANTS. 
tained in these ashes were 33.1 per cent., hence one-third 
of the whole quantity, which consisted of equal parts of 
alkaline carbonates and phosphates. The quantity of car- 
bonate of lime is diminished to 37 per cent.; whereas the 
phosphate of lime and magnesia augment to 18 per cent. 
The phosphoric combinations, therefore, in the ashes of the 
fruit amount to more than one-third, namely ,(to 36 — 38 per 
cent. It is striking that some traces of silica are met with 
only in these ashes. 
The amount of iron which has been determined by spe- 
cial experiments diminished from trunk to fruit. The 
quantity of iron, however, in the ashes of this plant is not 
material, amounting even in the trunk scarcely to 0.5 per 
cent. According to this analysis, the ashes are composed of: 
Trunk. 
Alkaline carbonates, 
4.6 
Carbonate of lime, 
82.2 
Carbonate of magnesia, 
4.9 
Phosphate of lime and magnesia, 
8.8 
100.5 
Leaves. 
Alkaline carbonates, with traces of chloride of 1 
sodium, sulphate of potassa and 
alkaline ^> 6.8 
phosphates, 
J 
Carbonate of lime, 
72.9 
Carbonate of magnesia, 
9.76 
Phosphate of lime and magnesia, 
10.5 
99.96 
Fruit. 
Alkaline carbonaics, 
1.9 
Alkaline phosphates, 
14.1 
Carbonate of lime, 
37. 
Carbonate of magnesia, 
5.52 
Phosphate of lime and magnesia, 
18.6 
Silica, 
3.7 
97.92 
