ON CALCEOLARIAS. 
265 
Another class of destructive depredators are caterpillars, and as 
they roll themselves up in the leaves, it is not easy to come at them 
with any mixture. In such a case, the best way is to gently pinch 
every curled leaf, so as to effectually kill its inmate. Their depreda¬ 
tions, however, may be greatly diminished by applying about a week 
or fortnight before the blossoms open, with a garden-engine or sy¬ 
ringe, a mixture of soft soap and weak tobacco-water. No trees, 
however, must be washed with liquid when the fruit is ripening, as 
it would materially injure the flavour. But if the winter dressings 
be attended to, there will rarely be either caterpillars, or any other 
insects infesting them. 
Young cherry-trees very frequently die after a wet season, this is, 
no doubt, caused by the wood being unripe and distended. To pre¬ 
vent this, when it is considered the tree has made wood enough, dig 
a trench two feet deep and one broad round the young trees, at the 
distance of from one to seven feet according to the size of the tree : 
this will prevent the roots from taking up too much moisture, and 
will give the young fibres a check. If this be attended to, very few, 
if any, young cherry-trees will prematurely die off. 
Joseph Paxton. 
FLORICULTURE. 
ARTICLE V.—ON THE CULTIVATION OF SEVERAL SPECIES OF 
CALCEOLARIAS. 
BY MR. PLANT, CHEADLE, STAFFORDSHIRE: 
Calceolarias, particularly the perennial herbaceous species, are 
now become very numerous, and in general are so beautiful, that 
they deserve a considerable share of attention : indeed, I know of no 
plants more calculated to give a greater degree of interest to the 
flower-borders during the summer months than they are; and by 
judicious management, the greater part may be made to contribute 
not a little to the decoration of the greenhouse, during October and 
November. 
There cannot be a doubt but every year, many new varieties will 
be added to this already beautiful genus, and in a few years, as Mr. 
Sweet observes, the species and varieties will become as numerous, 
as the extensive family of geraniums, and be equally as easy of cul¬ 
ture. I am now in possession of upwards of thirty hybrids, and 
trulv, T do not know any plants that can with more propriety be cal-: 
