3 
BOTANICAL SOCIETY OF LONDON. 
t 
hitherto been accurately described, and to communicate the 
results at the Ordinary Meetings of the Society ; and by a 
separate examination of thobsame plants, by different persons, 
produce a series of accurate descriptions of genera and spe- 
cies, which could not possibly have been done without such 
a co-operation of scientific Botanists. 
‘SJV. To publish these descriptions and other transactions, 
as often as may be deemed expedient. 
“V. To form Herbaria of British and Foreign plants, for 
the reference of the Members, and exchange with other So- 
cieties or individual collectors, and thus be the means of pro- 
ducing many valuable Herbaria, which otherwise would not 
have been completed or even commenced. 
“VI. To form a Library and Museum. 
“This Society consists of Resident, Corresponding, Fo- 
reign, Life, and Honorary Members.” 
NOVEMBER 3rd. 
J. E. Gray, Esq., F.R.S., in the Chair. 
Mr. Daniel Cooper communicated a Paper, being the re- 
sult of some observations “ On the influence of light upon 
the common broad-bean , with the results of an experiment 
made in order to ascertain whether coloured fluids are 
taken up by the roots of plants .” Mr. Cooper thus com- 
mences : — 
Not having heard of any experiments that had been made 
on the watering of plants with coloured fluids, and entertain- 
ing in my own mind some opinion respecting the separation 
of fluids by the spongioles of the roots, I made the above 
plant the subject of experiment. Reasoning from analogy it 
appeared to me that if spongioles had the power of absorbing 
silica, lime, sulphur, magnesia, &c., as is stated by Schrader, 
by watering plants reared in a place which was totally ex- 
cluded from the action of light (and thereby rendering 
them blanched) with solutions of colouring matter, if the 
coloured fluid should be imbibed by the spongioles, the plant 
possibly might exhibit a singular appearance, I procured a 
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