152 THE ORCHID REVIEW. 
always bearing in mind how very important it is to do each plant at the 
proper time, which is, as I have said before, when making new growth from 
the base, and new roots are pushing forth; otherwise a good deal of 
exhaustion and shrivelling takes place unnecessarily. 
I would also here mention once more how very important it is to experi- 
ment one’s self with those plants which fail to grow freely from no apparent 
cause, and not to keep them too long in that house or position most 
generally advised, for different structures vary greatly, and certain peculiar 
conditions in one house may be lacking in another ; therefore it is always 
well to make experiments with refractory species, carrying out such experi- 
ments cautiously, and treating them to different houses, or to different 
positions in the same house, either warmer or colder, preferring to try the 
cooler house or position first. It is always well to know how low a degree 
of temperature the various plants will stand without injury. When this is 
once known their cultivation is simplified very considerably, for it may 
generally be taken for granted that if no injury is received by a low tempera- 
ture the plants are benefited by it. 
Tue CaTTLeyA AND Mexican Houses should be kept at about the 
same temperature as the Intermediate; of course allowing a higher degree 
by sun heat, as these departments will not require so much shade, especially 
the Mexican house, which, if any shading is applied, should be very thin 
indeed ; consequently, a good deal of ventilation is demanded during bright 
sunny weather, to keep the plants from burning, which should be avoided. * 
In this last-named house such things as Mormodes, Ceelogynes, and some 
of the warm-growing Epidendrums, such as E. Parkinsonianum, E. 
memorale, E. atropurpureum, and E. prismatocarpum should, if not already 
repotted, be done without delay. In this warm, sunny, and airy depart 
ment I have often set aside a small portion which has been extra shaded 
for the purpose of trying plants which seemed loth to grow in their owns 
respective houses, and, strange to say, the result has been in most cases r 
very successful ; even some of the more difficult to grow of the Cypripediums 
have recovered there, as have also Burlingtonia fragrans, Acropera Loddi- 
gesii, and A. armeniaca. 
This month will see another batch of the Cattleya house plants potted 
up, including C. labiata, C. Harrisoniana, C. Loddigesii, C- Schroeder@, 
C. Eldorado, C. Bowringiana, C. I C. maxima, and any others 
if it is deemed necessary. Vanda suavis and V. insignis have just fini a 
flowering, and will be done up by replacing the old sphagnum moss biker 
new. These plants should occupy a rather shady part of the house, as also 
should Aerides Fieldingii and A. crispum. Ree 
East Inp1an House.—Temperature : Day, with sun, 85° to. 90°} eee 
sun, 75° to 80°; night, 70° to 75°; morning, 70°. Let these figures 
