COLLECTIONS AND RECOLLECTIONS. 
•501 
Our Correspondent having stated that fumigation is not effectual, 
we would advise, that if the above mixture does not suffice, it be made 
a little stronger of tobacco-water, and add also about a quarter of a 
pound of common brown soap to every gallon of the mixture used, 
which seldom fails. 
Propagation of Double Camellias by Cuttings. —The 
double Camellias will strike from cuttings nearly as readily as single 
ones, but they seldom or ever grow strong, and therefore never make 
good flowering plants. See page 849, Vol. 1, where an answer is 
given to H. L. T. on the subject. The remainder of H. L. T.’s re¬ 
quest, page 138, Vol. 2, shall be attended to. 
Treatment of the Daphne Pontic a rosea. —To Daphne, p. 
138. This variety is not quite so hardy as the pontica ; it should be 
sheltered in a pit or greenhouse during winter, or it is liable to be 
injured by frost. Its culture is perfectly simple, for it will thrive in 
any light sandy soil, but prefers peat. It should be planted in pots, 
and plunged in the open borders, in a situation where it will be to¬ 
tally shaded from the mid-day sun. When cold weather commences 
take it up, and remove it to the greenhouse, the frame, or other place 
most convenient. It is readily propagated by grafting on the com¬ 
mon spurge laurel, or by cuttings, but the former make the finest 
plants. They also succeed very well when planted out in the open 
border without pots, but they will require to be taken up and potted 
at the commencement of winter. 
Vegetables that will Thrive on a North Border.— In 
answer to Suffolk, page 233, Sea-Cale will grow exceedingly well in 
such a situation, providing the ground be vvell trenched. Also 
Rhubarb, Leeks, and Cape Broccoli; it may also be very advanta¬ 
geously planted with Cauliflower plants in the spring. When the 
plants are removed from the frames, to plant for the first general crop 
on a south border, plant at the same time on the north side, and 
they will succeed those on a southern aspect admirably well. 
To Preserve Specimens of Plants. —To “ J. K.” p. 426, we 
would say, see Vol. 1, pages 88, and 742, and we here introduce the 
opinion of Dr. Lindley, as stated in his “Introduction to Botany,” 
where he says, “ in selecting specimens for drying, care must be ta¬ 
ken that they exhibit the usual character of the species : no imper¬ 
fect or monstrous shoot should be made use of. If the leaves of dif¬ 
ferent parts of the species vary, as is often the case in herbaceous 
plants, examples of both should be preserved. The twig should not 
be more woody than is unavoidable, because of its not lying com¬ 
pact! v in the herbarium. If the flower grow from a very large woody 
