to the Earthy Constituents presented to their Absorbing Surfaces. 261 
of the plant which had been above the surface of the soil were separated, so 
that these at least might be considered free from any ingredients, except such 
as constituted integrant parts of its actual composition. 
The several portions of these respective samples having been weighed, re- 
duced to ashes, and examined in the usual way, the results were obtained in- 
dicated in the following Table, in which the stem, leaves, and flowers are 
comprehended under the head of * Parts above ground”; the roots and seeds 
which had not germinated, under the head of those “ under ground”. 
ient. Where sown. Weight of the dried plant. | eint of soluble d ae ls 
water. | nitric acid. 
Seeds of the Lo- 
tus tetragono: Pe A A Lae ae E N CY REA 23 4:0 2:6 
bus, 600 grs. .. 
In a Greenhouse. Parts. 
Soi. Gr. 
ud Eia | ear ae Bg re ea 
277 62 7:13 8:25 
Ditto, (| cammmmnie, {ftberegmmnd... in| 19.. |- 370 [is 
302 53 6:90 53:3 
Dito. {} Washed son-san: f] sove groma... 4| 3 | 28 | 
“134 1 3:7 3l 
Ditto. — || Flowers of sulphur. {| dread. 109| 5 | 26 | 19 
; 208 11 5:2 4:8 
The aqueous solution consisted chiefly of potass combined with the carbonic 
or phosphoric acids, together with a slight admixture of sulphate of lime, 
whilst the portion which the acid dissolved was chiefly composed of an earthy 
carbonate and phosphate. 
Now I satisfied myself, by a minute examination, that the acid solution de- 
rived from the stems contained no trace whatever of strontian, although a 
small portion appeared to be present in, or at least adherent to, the roots. 
2M 2 
