275 
remarkably well ; and those trees which had been most abun- 
dantly supplied with manure have displayed the greatest degrees 
of health and luxuriance.” 
“A single orange-tree was subjected to the same mode of 
treatment, and grew with equal comparative vigour, and ap- 
peared to be as much benefited by abundant food as even the 
vine and mulberry tree.” 
“An opinion generally, though I think somewhat erroniously 
prevails, that many plants, particularly the different species and 
varieties of heath, require a very poor soil in pots ; but these 
might, I conceive, with propriety, be said to require a peculiar 
soil ; for I have never seen the common species of this genus 
spring with so much luxuriance as from a deep bed of vegetable 
mould, which had been recently very thickly covered with the 
ashes of a preceding crop of heaths, and other plants that had 
been burned upon it. And I believe, if the branches and leaves 
of the common species of heath were placed to decompose in 
water, and such water were afterwards given to the tender 
exotic species, that these, how heavily soever the water might 
be loaded with organisable matter, would be found as little 
capable of being injured by abundant food as the vine or mul- 
berry tree, though the species of food which would best suit 
those plants might prove to every species of heath destructive 
and poisonous.” 
The advantages arising from the supply of liquid manure to 
plants in pots is too obvious to require recommendation. It is 
this practice, more than any other, which is now placing one 
cultivator so eminently above another. We hope that our 
readers will avail themselves of the benefits of this knowledge. 
221 Caoutchouc or India Rubber Tree. One of the defi- 
ciencies of education, in this country, appears to be the absence 
of all regular study of the works of nature, — of the communi- 
cation of knowledge in immediate connexion with those objects 
which every where surround us. Knowledge of these is not 
simply a medium through which mere curiosity might be grati- 
fied ; indeed, a moment’s reflection will open to us a view of 
our great — almost entire, dependence on the vegetable kingdom, 
either directly or indirectly, for our food, our raiment, and 
our pleasures; hence, the more intimately we make ourselves 
acquainted with its productions, the more profit shall we derive 
238. iDCTARICM. 
