tt THE ORCHID REVIEW. [FEBRUARY, 1911+ 
warmer one, to be brought on in batches, as recommended in the previous 
Calendar, keeping them on the dry side until the flowers are fairly well 
advanced, or else they may turn to aérial growths, and frustrate one’s 
efforts to produce their flowers at an early season. 
BULBOPHYLLUMsand Cirrhopetalums that have started to push their new 
roots may be shifted into larger receptacles, if they need it, using the 
compost recommended for Miltonias. Some of them are very interesting, 
and have a beauty entirely their own, and no collection is complete without 
some of them in it. 
CALANTHES, as they pass out of flower, should be carefully rested, and 
kept entirely dry. The best place for them is a shelf in the Intermediate 
house, where they will get all the sun and light possible to thoroughly 
ripen their bulbs. 
THRIP, and other insect pests, must be watched for at this season, for 
the extra fire heat required to maintain the temperatures makes the con- 
ditions in which these pests revel. When any plant is subject to constant 
attacks of these pests, we may take it for granted that it is not in its proper 
conditions, and fresh quarters should be found for it. 
VENTILATION must have every attention during the month, and no 
opportunity of admitting fresh air into the houses should be lost. I always 
try, as far as possible, to use both top and bottom ventilators together, but 
in such a way that no draught is caused. This is done by using the 
ventilators on the lee side of the house, and not opening them too wide. It 
is astonishing the difference in a house suitably ventilated and one where 
the ventilators are improperly manipulated, and I am sure that many 
failures are due to this cause. I think that it is in these small matters 
where many go astray. 
THE HYBRIDIST. 
OncipiopA PENELOpE.—An interesting hybrid, derived from Cochlioda 
Neetzliana ? and Oncidium leucochilum 3, was exhibited by Messrs. 
Charlesworth & Co., Haywards Heath, at the R.H-S. meeting held on 
January 17th last. The plant had much of the Oncidium habit, and bore a 
lax spike of flowers, one of which was kindly given to us. The 
Sepals and petals are much like those of the Oncidium in shape, slightly 
reflexed, and reddish orange in colour. The lip is strongly four-lobed, and buff 
yellow, with a strongly four-lobed crest. The column is short, nearly free, 
buff yellow, and the wings broad, acute at the apex, and denticulate. 
Opontiopa ZEPHYR.—A pretty little hybrid raised in the collection of 
R. G. Thwaites, Esq., Streatham (gr. Mr. Black), from Cochlioda 
Neetzliana ? and Odontoglossum Wilckeanum 3. It was exhibited at the 
R.H-S. meeting held on January 17th, and may. be described as about 
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