ON THE STUDY OF THE SCIENCE OF BOTANY. 
211 
a letter just received from our friend, Mr. H. Lake, of Uxbridge, 
reporting an easy means for destroying the millepede; it runs thus:— 
Sir,—There has long been a great desire by all cultivators of the 
cucumber and melon, to exterminate the insect, Armadillo vulgaris , or 
millepede, from the frames. 
“ I am happy, therefore, to be able to inform them, that, by the 
use of carbonic acid gas in the frames, not only will that formidable 
insect be extirpated, but the plants will also be greatly assisted in 
growth. 
“ If you think it worth while to give the particulars an insertion 
in your periodical, I shall feel great pleasure in presenting them 
to you. “ I am, Sir, yours truly, 
“ H. Lake.” 
“ Uxbridge, April 20 th, 1836.” 
We shall feel much obliged to our friend Mr. Lake for his promised 
information, as the mode of applying the gas will be of great service to 
many of our readers.— Editor. 
(To be continued .) 
BOTANY. 
ON THE STUDY OF THE SCIENCE OF BOTANY. 
BY F. F. ASHFORD. 
(Continued from p. 261, Vol. iv.) 
Classis XVI. —Monadelphia. 
Monadelpliici, derived 
from monos, one, adel- 
phos, a brother, consist¬ 
ing of plants that bear 
flowers which are bisexual, furnished with stamens connected into 
one body at their base, but dividing upwards. This class consists 
for the most part of Malvaceae and Geraniacece. Of the former, the 
major part are of little moment, consisting, in a great measure, of weeds 
and worthless shrubs of various parts of the world; among them, how¬ 
ever, are some plants both of interest and ornament, especially the 
beautiful Astrapcea , and the various species of Bornbax and Hibiseus. 
The Gossypium, so important as producing the material of cotton, and 
Adansonia, or Baobab tree of Africa, remarkable for its immense size 
