98 THE ORCHID REVIEW. [MARCH, 1913. 
not buried under the. compost. One should endeavour, in potting 
Cypripediums, to see that the base of the plant is always slightly above the 
rim of the pot. Keep any newly-potted plants almost dry at the root for 
several weeks, until it is seen that fresh roots are being emitted into the 
new compost... Frequent syringing over the leaves will prevent the plants 
from shrivelling. On bright sunny days it may be necessary to lower the 
blinds for a few hours in the middle of the day, otherwise the sun might be 
liable to scorch the leaves. It should be remembered that more shading is 
required now than during the next and following months, for all Orchids 
are at this time more subject to the various conditions of the weather, by 
reason of having passed through the winter, which is a very trying season 
for them. 
As the days grow longer more water will be required. As previously 
remarked, no set rules can be given with regard to the number of times any 
Orchid should be watered, but the following may serve as a guide. Any 
plants in full growth should receive a good dose every other day, whilst 
those at rest should be given a small quantity about twice a week. Maintain 
as far as possible an average temperature of 55°-60° Fahr. during the day, with 
an optional drop of five degrees at night. It need hardly be remarked that 
fire heat must be employed for maintaining the correct.amount of warmth 
up till the beginning of next month, for on no account must the house be 
shut up early in the afternoon with a view to keeping it warm enough 
without the use of the fire. 
OnciDIuMS.—The time has now arrived to repot the winter-flowering 
Oncidiums, which comprise such well-known kinds as O. concolor, 
crispum, divaricatum, dasytyle, fexuosum, Forbesii, Gardneri, incurvum, 
ornithorhynchum, tigrinum, and varicosum. I am firmly convinced that 
the deterioration of these plants may be effectually checked by annual 
repotting, and the compost recommended consists of two parts osmunda 
fibre to one of sphagnum moss, and a few oak leaves may be added with 
advantage. The plants must be kept almost dry until fresh roots are 
observed from the base of the bulb. 
ODONTOGLOssuUMS.—Several members of this genus will be in flower 
during this month. Having been asked several times for a selection of a 
dozen hybrids of moderate cost, I would recommend the following: 
Adrianz, ardentissimum, Clytie, Ceres, Fascinator, formosum, Hallio- 
triumphans, Jasper, Lambeauianum, loochristiense, Rolfee, and warn- 
hamense. For amateurs a very interesting speculation is the purchasing of 
unknown seedlings of Odontoglossums. These frequently produce flowers 
of wonderful colouring and good shape, whilst there is always the additional 
attraction of blooming a new variety. 
There are some Orchids which are entirely unsuitable fot cultivation in 
