242 THE ORCHID REVIEW. [Aucust, rgr2. 
CALENDAR OF OPERATIONS FOR AUGUST. 
By J. T. Barker, The West Hill Gardens, Hessle, E. Yorks. 
THE summer temperatures, as given in the May number, must still be 
maintained, and the remarks there made respecting watering, ventilation, 
and atmospheric moisture still hold good. 
The weather we have recently experienced has not been to the liking of 
heat-loving Orchids, and while it lasts it is advisable to keep a certain 
amount of heat in the pipes in all the warm houses, which will allow of a 
certain amount of air being given to them at all times. I am strongly of 
the opinion that many failures in the cultivation of Orchids is attributable 
to a stagnant atmosphere and faulty ventilation. 
The Odontoglossum house must still be kept as cool as possible, and 
during the continuance of wet, cold, and sunless weather ample ventilation 
may be given, but should a spell of hot and dry weather prevail the top 
ventilators must be used with caution, and copious dampings must be given. 
CaTTLEYAs, L&LIOCATTLEYaS, and allied subjects should be potted as 
previously advised whenever they get into the proper condition and are in 
need of it. Wherever these are grown in quantity there will be some that 
require attention, and with us very few weeks pass without some of these 
plants being repotted. To keep them in good health the compost must at 
all times be maintained in a sweet and healthy condition. 
SOPHRONITIS GRANDIFLORA.—Plants of this species, now commencing 
to grow, may require repotting. They are best grown in shallow pans, 
which must be well drained, and suspended from the roof of the Cool house. 
A thin layer of compost is all they need to root into. A similar compost to 
that used for Cattleyas will answer their requirements, but it is advisable 
to use it in smaller pieces, as this subject is a Cattleya in miniature. 
Water must be sparingly given until the flower buds appear, when the 
quantity can be increased. 
SOPHROCATTLEYAS and SOPHROL2ELIAS naturally require similar treat- 
ment, and several of them are beginning to grow, so that any necessary 
repotting should be done as soon as new roots are seen to be pushing from 
the base of the pseudobulbs. These plants succeed in the same material as 
Cattleyas, and are best grown suspended in a light and cool position in the 
Cattleya house. Plants that have not yet commenced to grow must be 
kept on the dry side, but on no account must they be allowed to suffer for 
want of water. These hybrids require very careful handling, as many of 
them have a very delicate constitution, and must be watered carefully at all 
times, as the leaves and growths will decay if the compost gets into a 
saturated condition. They comprise some of the most brilliant and highly- 
coloured flowers imaginable. 
