EXTRACTS — FLORICULTURE. 609 
On Canker in Frut Trees. — The nature of the sap or juices of one sort 
of stock, may suit particular sorts of grafts, and another sort other kinds. The 
nature of the stock, therefore, is more particularly the cause of canker in fruit 
trees. However, there are other causes besides this, as for instance, in taking up 
and transplanting trees, the roots are often injured in a great degree by being much 
reduced; and should the top not be pruned in proportion, the plant usually 
becomes bark-bound for want of nourishment, whereby it languishes, and canker 
generally ensues. Bruises are also often a cause of canker. Jargonelle pear 
trees are often affected by a different kind of canker. Rubbing over the 
diseased part slightly with hogs-lard, is often found beneficial to Jargonelle 
trees. When a tree is wished to be permanently established, either against a 
wall or as a standard, sowing two or three seeds of the crab sort in the selected 
spot is to be recommended. If more than one plant grows, leave the best, and 
pull away the others, Stocks produced on the spot where, they are destined to 
remain, will probably be fit for working the third year, or at most the fourth. 
This method may appear tedious at first view, but in a few years it will fully 
compensate for the delay. The composition to be iised as a cure for canker, is 
made of one pound of pitch, half a pound of rosin, half a pound of Venice tur- 
pentine, four ounces of bees' wax, two ounces of hogs-lard, or a gill of whale oil, 
heated over a fire until the whole is incorporated with a liquid matter. After 
cleaning out the diseased part wash it with a strong solution of soft soap, and 
brush it well, cover the orifice or part with strong paper or sheep's skin, and 
with the composition warm and a painter's brush, cover over all round the 
wound on the tree. "W^hen canker appears in forest trees, it is, in a great mea- 
sure, occasioned by the injudicious mauuer in which the different species are 
arranged. Willows and alders ought to be destined for a bog ; oaks and ash 
for a strong soil. Larch should be more elevated. 
The juice (sap) appears to be very superabundant, yet it is most applicable for 
a great many kinds. The juice of the crab is most congenial iu a general view 
to grafts of all sorts of apples. — A. Diack. — Cal. Hort. Soc. 
FLORICULTURAL INTELLIGENCE. 
New and very rare Plants, figured in the Botanical Periodicals for June. — 
CLASS I.— DICOTYLEDONOUS PLANTS, OR EXOGENES. 
Fernstromi\\ce^, M'trhel ; Camelli^E-E, Jussieu. 
Cam^ellia japonka ; var. Reevesiana: Mr. Reeves's crimson Camellia. — 
Flowers double, very rich crimson, but liable to variation. Native of China, 
from whence it was imported by Mr. Tate; it is named iu compliment to Mr. 
Reeves, a zealous Botanical collector in the celestial empire. — Ed. Bot. Reg. 
MYRTACEjE. 
CorROUPiTA Guianensis. Guiana Couroupita, or Cannon-Ball Tree. A 
tree growing to a vast size, one of the greatest ornaments of the dense forests of 
VOL. I. NO. 13. 4 B 
