37 
production of leaves, one side of which is larger than 
the other. Such leaves occur in the Elm tree and 
the Begonia. In both these instances one side is re¬ 
gularly larger than the other, every leaf being neces¬ 
sarily formed upon the same plan in that respect, 
owing to a peculiar mode of development when 
very young. But observe how such leaves stand on 
the stem; the larger side of the leaf is invariably 
directed away from its branch, and the smaller to¬ 
wards it. This is the case throughout the whole 
structure,—the larger sides next the eye. It seems 
as if such leaves were most developed on the side 
where they are most strongly struck by the light 
when young. But in these instances there is no 
irregularity of form, nor any real interference with 
that symmetry which has been so much insisted upon. 
If each half of the leaf does not balance the other, 
at least one half of the plant balances the other half. 
82. Examples of drawings, executed in exact con¬ 
formity to these principles, will be found in such 
works as the Sikkim Bhododendrons, illustrated by 
Mr. Fitch; in any of the figures of plants executed 
by the French artist Riocreux, or in those by the 
late Ferdinand Bauer, whose Flora Grajca, in ten 
volumes folio, contains 1000 exquisite repi’esen- 
tations of plants, upon which the scientific botanist 
in vain attempts to exercise his critical skill. Still 
finer examples of admirable pictorial talent, com¬ 
bined with great knowledge of the subject, are to 
be met with in the same artist’s unpublished draw¬ 
ings of Passion flowers, preserved in the library of 
the Horticultural Society. In these drawings every 
angle, every curve, every elevation or depression, 
every detail of form or position, all in short that 
