Juzy, 1906.] THE ORCHID REVIEW. 205 
ing that place among Odontoglossums that Sophronitis grandiflora does 
among Cattleyas, and we may look forward to seeing in time in general 
cultivation a series of lovely hybrids between them and the Odontoglos- 
sums. C. Noetzliana is the best of the genus, and then come C. vulcanica, 
the only other two in cultivation, I believe, being C. rosea and C. sanguinea. 
When strong they last a long time in flower, the bottom flowers fading 
before the top ones are open. A plant of C. vulcanica was quite ten weeks 
in flower at Chessington this season. ‘he culture is practically the same 
as that afforded to Odontoglossum crispum. They should be potted in the 
compost recommended for Odontoglossums, in particularly well drained 
small pots or pans, when the new growth is an inch or two high. 
CALANTHES.—These plants are now well advanced, and the pots being 
well filied with roots, they will require abundance of water. They will 
benefit by being watered once or twice a week with weak liquid manure, or, 
if that is not procurable, with some other fertilizer ; but the extent to which 
feeding may be done will depend on the nature of the loam in which they 
were potted. They require abundance of light to ensure ripening. 
Oncipiums.—Oncidiums generally, and particularly those of the 
crispum section, deteriorate quickly if not treated with much discretion. 
The pseudobulbs are usually small in comparison to the size of the spikes 
they throw up, and the plant is in danger of being drained if the spikes are 
allowed to remain on for long. On flowering, these cool-growing species. 
require a long rest in comparative dryness, but when growing and develop- 
ing their spikes, which in some cases, such as O. macranthum, are a long 
time on their way, they require large quantities of water, and the compost 
must in consequence be of an open and good lasting character. 
SOPHROCATTLEYAS AND SOPHROL&#LIAS.—We have a_ nice little 
collection of these elegant and brilliant hybrids, which, from the difficulty 
attending their raising, are likely to remain very scarce. They grow best 
with us in the Cattleya house, in pots of limited dimensions, and in the 
compost recommended for Cattleyas. Cattleya treatment generally suits 
them, and they are really very satisfactory growers, once they have attained 
a certain size. We potted those of flowering size this spring particularly 
firm, surfacing with peat, with just an occasional tuft of moss. I -think 
this suits them better than an all-moss surfacing, as the roots get more air, 
and the water passes through more freely, and, although the Sophronitis 
parent is usually regarded as a rather shade-loving plant, we find these 
hybrids enjoy a large amount of sunshine. 
SEEDLING ORCHIDS.—Seed sown in spring will now be germinating, and 
in some cases it may be advisable to transfer the larger to other pots. 
There is a little grub which makes its appearance in the compost, and which 
has accounted for a good many seedlings in the germination stage. When 
