24 - 
THE FLORIST’S JOURNAL. 
usually employed at this part of the year for raising tender 
annuals, will be necessary on which to sow the seed; and as 
soon as they are large enough to handle, let them be potted 
singly into small pots, continuing them in the frame until grown 
sufficiently to bear removal to the greenhouse, here with the 
usual attention to repotting, &c., they will produce flowers 
almost as early as mature plants, and according as any improve¬ 
ment or degeneration is observable they should be preserved or 
rejected,—the best to be increased by cuttings, which root rea¬ 
dily at any time in sandy mould on a gentle bottom heat, — and 
the remaining portion may be turned into the beds of the flower 
garden. We have generally observed the white and pale- 
coloured varieties exhibit a much less tendency to produce 
other varieties than those of a deeper shade. 
Horticultural Essays, 
By the Members of the Regent's Park Gardeners' Association. 
( Continued from page 16.) 
VEGETABLE PHYSIOLOGY: the Compound Organs. 
By Mr. T. Moore. 
The parts we have been previously considering are called 
elementary organs; but there are others to which we must now 
direct our attention, and these are designated the compound 
organs of plants. It will be desirable, in the first place, to 
notice some of these, which are general to almost all parts of 
plants; they are, the cuticle , and its appendages: 
The cuticle itself is a thin and extremely delicate mem¬ 
brane, composed of parenchyma, the vesicles of which are 
compressed into a firm state of cohesion. It is not, therefore, 
as some suppose, a peculiar membrane, but a form of cellular 
tissue, which covers all those parts of plants which are exposed 
to the air, except the stigma, and the spongioles of the roots; 
and is as constantly absent from any parts of plants which are 
habitually under water. It appears to the naked eye like a 
transparent homogeneous skin; but it is by the aid of a micro¬ 
scope that it is seen to be cellular tissue in a compressed form, 
