JANUARY, 1903. | THE ORCHID REVIEW. 27 
CALENDAR OF OPERATIONS FOR JANUARY. 
By JOHN Mackay, The Gardens, Highbury, Birmingham. 
THE temperatures in the various departments should be kept as steady as: 
possible for the next few weeks; the following will serve as a useful guide 
to this end. 
CooLt HousEe.—Day, 50° to 60°; night, 45° to 50°. 
INTERMEDIATE HovusE.—Day, 55° to 65°; night, 50° to 55°. 
East INDIAN HousEe.—Day, 60° to 70°; night, 55° to 60°. 
Coot Hovuse.—In this department air should be admitted as freely as. 
the outside conditions will permit. Water must also be applied sparingly 
to plants that are dormant as well as to those in an active state. Where 
this régime is carried out, it will be found, if the plants are carefully 
examined after the winter is past, that the roots and plants themselves are 
in a healthier condition than would have been the case had they been kept 
in a wet condition. This, again, will show its advantage at a later date, 
for plants so kept will be found to grow more quickly and stronger, thus 
enabling better results to be obtained. Damping down once a day may be 
necessary, according to conditions prevailing outside ; should, however, the 
weather be damp and mild none need be done. 
CATTLEYA, INTERMEDIATE AND East INDIAN HouskEs.—The advice 
given above is equally applicable to these, excepting that when a great 
amount of fire heat is necessary, the greater also must be the amount of 
water distributed for evaporating purposes. Cypripediums belonging to the 
warm section comprise a large class of beautiful and useful Orchids, a 
great many of which may now require attention, as new growths are 
advancing, and these will quickly be emitting new roots. Turn out the 
plants that are needing attention, and remove all decayed compost and as 
’ many of the dead roots as possible. Then select pots of suitable size, and 
insert the plant to be potted, working in a quantity of crocks amongst the 
roots to within a few inches of the rim, and fill the remaining space with a 
compost of equal parts of peat and sphagnum, and a little fibrous loam, 
together with small pieces of sandstone and broken crocks. This will be 
found a suitable compost for such species as C. Stonei, C. Sanderianum, 
C. Rothschildianum, C. philippinense, and most of the Selenipedium group. 
L#LIA JONGHEANA.—This lovely species grows suspended in a light 
part of the Intermediate house, and has its flower buds already showing. 
These may be encouraged by slightly increasing the water supply as the 
flowers develop. When growth is developed and matured, we suspend 
them in a light part of the Cool house, giving little water until they 
commence to grow in the autumn. With this treatment they succeed very 
well, and flowers are generally fairly plentiful. 
