JuNE, rg1t.] THE ORCHID REVIEW. 173 
CALENDAR OF OPERATIONS FOR JUNE. 
piss T. BARKER, The West Hill, Hessle, E. Yorks. 
SINCE my last the weather has taken a most desirable change, and the 
conditions for the last three weeks or so have been all that could be desired,. 
the result being that the plants, especially those that require heat and light, 
have made rapid progress. 
TEMPERATURES may remain at the figures given last month, with a 
slight increase during mild and sunny weather. 
Coot HousrE.—The Cool house must be kept as cool as possible, and 
the atmosphere must at all times be kept in a humid condition. 
VENTILATION AND SHADING.—Great attention must be given to ventila- 
tion and shading, as by this means the temperatures are regulated during 
the day, and the two combined must be used in such a manner that no 
excessive fluctuations are allowed. 
ATMOSPHERIC MOISTURE.—In all the houses a moist humid atmosphere 
must be maintained, not only to assist the plants in making clean, healthy 
growth, but also to prevent the ravages of thrip and other insect pests. 
Damping down and spraying must be done whenever the temperature 
appears to be dry or stuffy, for if the houses appear uncomfortable to us, 
they are equally so to their inmates. 
FLOWERING PLANTS.—Houses in which the flowering plants of the 
different families are placed may be kept a little drier and cooler than those 
in which the plants are that are making their growth, but great care must 
be taken that the temperature at night does not fall too low, for if the 
atmosphere is too heavily charged with moisture the flowers will become 
spotted and ruined. All plants that are not in good condition should not 
be allowed to carry their flowers after they are open. I have never seen 
any ill effects from a strong healthy plant carrying its crop of flowers until 
they fade in a natural manner. 
CATTLEYAS.—C. Warscewiczii (gigas) and its allies will now be in 
active growth, and must have liberal supplies of water, and should also. 
occupy the lightest position in the house. The earliest of them will already 
be showing their flower sheaths, and those that are not doing so will have 
the sheath formed in the growths, that is if they are going to flower this. 
season. Withholding water after this date, as an inducement to the plant 
to flower, is a practice that I do not recommend, and will-do no good, but, 
on the contrary, a great deal of harm, as a plant that is half-starved (so to. 
speak) for want of water never reaches the same size and stature as a 
properly nourished one. C. Mossiz and Mendelii will now be in full flower, 
and as soon as they pass out of bloom may be repotted, should they require 
it, in the compost recommended for Cattleyas in a previous number, being: 
