May, tgto.] THE ORCHID REVIEW. 14] 
now many beautiful hybrids of Sobralia, and this class of plant deserves to 
be more widely grown than is the case at present. They are easy of 
cultivation, and will grow in any warm house where they can have a little 
shade. 
STANHOPEAS can now be attended to. Any that require a larger basket 
should be carefully taken out, and as much as is necessary of the old 
compost pricked away with a pointed stick. Then place the plant in a 
suitable-sized basket without any crock at the bottom. A suitable compost 
for them is half good fibrous peat and sphagnum moss, or Osmunda fibre 
may be used instead of peat if preferred. They should be made firm, but 
should not have the compost pressed too hard. They grow well when 
suspended from the roof at the warm end of the Cypripedium house, and 
carefully watered till the young growths are well advanced. 
ZYGOPETALUMS.—Z. Makayi, Z. crinitum, and others of the strong 
growing kinds will now require repotting. They require ample rooting 
space, but should not be over-potted. A suitable compost for them is 
composed of one-third each of fibrous loam, peat and sphagnum moss, well 
mixed together, and in a fairly rough state. After repotting they should be 
placed at the warm end of the Intermediate house and be well shaded. 
When well rooted they require copious supplies of water, and during the 
summer months like plenty of syringing. Be careful that the water does 
not lodge in the centre of the young growths, or they will quickly rot. Z. 
maxillare (Gautieri) does best when grown in a basket and suspended from 
the roof, or in a pot witha teak raft fixed upright and covered with compost 
for it to run up. I find that this variety does best when peat and 
sphagnum moss alone is used for compost, and grown at the cool end of the 
Cattleya house. 
ORCHIDS AT THE MISSOURI BOTANIC GARDEN. 
Tue Orchid collection at the Missouri’ Botanic Garden, St. Louis, U.S.A., 
is, of course, a botanical one. It includes about a thousand species and 
varieties, such genera as Epidendrum, Schomburgkia, Catasetum, Chysis, 
Vanda, Stanhopea, Cattleya and Cypripedium being well represented. 
The climatic conditions here are admirable for the Warm-house varieties, 
but for the Cool-house Odontoglossums and Masdevallias from the Columbian 
region it is detrimental. It will very well be understood by the English 
Orchidists when I venture to say that the thermometer outside registers 
quite frequently in the summer 100° F. in the shade, dropping down tc 80° 
F. in the night, and in the winter registering Zero. Of course the winter 
temperature is overcome by a little exertion on the part of the fireman ; but 
the extreme summer heat is a difficult proposition to solve in growing such 
things as Odontoglossum crispum. The Mexican varieties Odontoglossum 
