A dictionary of modern gardening - University Library

PON 474 PON
Green-house evergreen shrub. Young
cuttings. Sandy peat.
PONDS, are reservoirs of water dug
out of the soil, and made retentive by
puddling with clay their bottoms and
sides.
Puddling is necessary in almost all
and marked out, it will then be necessary
to form a second or outer mark,
indicating the space required for the
wall or side puddle, and about three
feet is the proper space to allow for
this—the puddle requiring about two
feet, and the facing which requires to
}
t
I
I
instances and the mode of proceeding be laid upon the puddle ought to be
is thus detailed by Mr. Marnock, in the about a foot more, making together
United Gardeners'' Journal. When the three feet. Ponds may be made very
excavacation is formed, or partially so, ornamental, and for suitable suggestions
the bottom puddle near the outer edge
is formed, and upon this is raised the
on this point, see Water.
PONGAMIA. Four species. Stove
upright or side puddle ; and as this evergreen shrubs. Cuttings. Sandy
proceeds the ordinary clay or earth is
raised at the same time, and by this
loam and peat.
PONTEDERA. Seven species.
means the upright puddle is retained in Stove aquatics, except the hardy P.
its place ; and ultimately the sides, being ccErulea. Division. Rich light loam
formed in a sloping direction, admit of
being covered with gravel or sand, and
in water.
PONTHIEVA. Two species. Stove
may be walked upon, or stakes may be orchids. Division. Sundy loam and
driven to a considerable depth without
reaching the puddle or in any way in-
peat.
PONTIA. A genus of butterflies of
juring it; this can never be the case if which the following one is most obthe
puddle, as is sometimes done, be noxious to the gardener:laid
upon the sloping side of the pond P. hrassicie, the large white cabbage
The sides may slope rapidly, or the reverse
: if the slope be considerable,
butterfly is thus described by Mr. Kollar
sand or gravel to give a clean appearance
will be the more likely to be retained
upon the facing; plants can be
more easily fixed and cultivated; goldfish
also find in these shallow gravelly
parts under the leaves of the plants
suitable places to deposit their spawn,
and without this they are seldom found
to breed. Ponds made in this way may
be of any convenient size, from a couple
of yards upwards to as many acres.
The following is the section of a pond
Fig. 137.
:— " The wings are white ; the upper
wings with broad black tips, and
the female has two black spots on the
middle. The under side of the under
wings is light yellow. Breadth, when
expanded, two inches. It appears from
May to October. The caterpillar is
bluish-green, thinly haired, and sprinkled
with black dots, having a yellow
stripe on the back, and the same on the
sides. These caterpillars are found,
throughout the summer and autumn,
on all the sorts of cabbage, on horseradish,
radishes, mustard, and similar
plants, as well as on water -cresses.
The pupae are yellowish-green, with
black dots, with a point on the head,
and five on the back. The best way to
destroy them is picking off and killing
the caterpillars, as well as the pupa;,
as far as it is possible; the latter are
found attached to adjacent trees, hedges,
and walls. But care must be taken not
to destroy those pupa; which have a
brown appearance; because they are
thus formed : a indicates the surface of full of the larva! of ichneumons, and
the ground at the edge of the water; other allied parasites, which are the
\
b, the puddle ; c, the facing to preserve great scourge of these caterpillars."
the puddle from injury ; d, the water; Kollar.
P. rapm Small White Cabbage Butordinary
bottom. When a small pond terfly. The following extracts are from
i
of this kind is to be made, and the ex- the same good authority 1 :—
c, the surface of the latter ; and /, the !
ordinary bottom. When a small pond
of this kind is to be made, and the ex- " This But-
1
tent of the surface is determined upon i
—
terfly resembles the foregoing, but is