126 
THE LADIES’ MAGAZINE OF GARDENING. 
with the same soil, and twelve plants of different species put into each ; 
at the end of six months there was no difference in their appearance, the 
plants in the one box looking quite as well as those in the other. A 
quantity of Calendrinias and Pelargoniums were afterwards planted in a 
box of Kyanized wood, and at the end of three months exhibited no ill 
effects ; from which it appears that Kyanized wood exercises no injurious 
effects on vegetation while growing in a cold dry atmosphere. Some 
plants were then selected capable of enduring a high temperature : here 
the effect was very different, the leaves which came in contact wdth the 
wood quickly withered, and a sensitive plant was killed; those plants 
which were not dead were then removed, and placed in another box not 
Kyanized, with similar soil, when they very soon recovered. 
The only interesting plants exhibited were tw^o very fine specimens of 
Phaius Tanicervellia , from Mrs. Lawrence, each bearing fourteen spikes 
of flowers: there were also a fine Camellia Donkellcerii , Azalea Phce- 
necia,Ccelogyne cristata , (so named from a tuft of yellow hairs in the centre 
of the flowers), a good specimen of Cyrtochilum maculatum , (a Mexican 
plant, not requiring a very high temperature; the house in which it was 
grown having been as low as forty-two degrees,) a new species of 
Columnea from Mexico, something like C. scandens ; a seedling Epacris ; 
and from Mr. Mills a brace of fine cucumbers, grown according to the 
method recommended in his Treatise. 
March 2.—The results were detailed of several very curious experiments 
which have lately been tried by Dr. Lindley on hyacinths, some of which 
were grown in charcoal, and some in pure white sand, and which were 
watered with solutions of different kinds of salts, most of which proved 
highly injurious to the plants. A paper was read on a philosophical 
mode of preventing the ravages of snails, by surrounding the pot 
containing the plant to be protected with a strip of zinc, surmounted 
by a rim of copper, which curves over, from the plant: this forms a minia¬ 
ture galvanic battery for the poor snails and slugs; as the moisture 
exuded from their bodies, and without which they cannot crawl, serves 
instead of water; and thus the snail, if it suffers its tentacula to touch 
the copper while its body is on the zinc, sustains a galvanic shock, and is 
effectually deterred from proceeding any further. 
Among the plants exhibited were a magnificent specimen of Oncidium 
altissimum , with flower-stems from thirteen to fourteen feet long, which 
gained a silver Knightian medal, and, with Epacris impressa and Erica 
carinata , was sent by Mrs. Lawrence. Messrs. Yeitch and Son, of Exeter, 
exhibited a small plant of Lechenaultia biloba , one of the blue species, 
from Swan River, the first which has yet flowered in this country, and to 
