“300 THE ORCHID REVIEW. [OcToBER, 1915. 
of Odontoglossum, Masdevallia, and the many other species and varieties 
in the Cool house every evening and early morning, in order to entrap any 
slugs that may have been brought in with the sphagnum moss used in the 
‘potting compost. To the same end use as traps some young lettuce leaves, 
pieces of potato, carrot, apple, &c., which are always useful. No trouble 
must be spared in this matter, especially at this season, otherwise these 
pests will soon increase and give considerable trouble and vexation when 
‘the flower spikes appear,-and probably infest more valuable plants. 
CATASETUMS, &c.—Plants of Catasetum, Mormodes, and Cycnoches 
that have gone out of bloom, or have completed their growth without 
producing flower spikes, should now be removed from the East Indian 
house to a very light position in the Mexican house, or a warm unshaded 
Vinery, direct sunshine being necessary to harden and mature the latest- 
made pseudobulbs. While these plants retain their foliage in a fresh green 
‘condition they will need water occasionally, but so soon as they change 
colour and fall off, very little or no water will be needed. Strong, well- 
‘matured plants will need no water for several months unless undue shrivelling 
“of the pseudobulbs occur. Badly-ripened growths, on the contrary, require 
water once a week or every fortnight, in order to preserve them in a 
plump state. Some of these plants, after producing their first flower spikes, 
if strong, frequently send out others a few weeks later, but these later spikes 
it is advisable to pinch off, to prevent the new pseudobulbs being weakened 
and retarded in their completion. Many of these plants are very fine 
-objects when in flower, and all are extremely interesting. To keep them in 
good health for any length of time it is ncessary first to give them a 
generous-growing treatment, then a thorough ripening of the new growth, 
and afterwards a long decided rest. 
THUNIAS.—These plants are still retaining their foliage and, being in a 
dry atmosphere and in full sunlight, are apt to be infected with red spider. 
When this is the case, the leaves and stems should be thoroughly cleansed, 
-or these destructive pests will spread. Lay each plant down on its side, 
and well syringe the undersides of the leaves with a strong solution of soft 
Soapy warm water, and if badly infested add some safe insecticide. Allow 
the solution to remain on till quite dry, and afterwards well syringe the 
plants with clear tepid rain water. After the leaves have fallen cut out the 
old and decayed stems, and tie up the newly-made one to neat stakes, and 
until growth recommences keep the plants quite dry at the root, and in a 
cool dry place. A corner of the potting, shed will often answer for this 
purpose. 
PHAL&Nopsis.—By this time some of the Phalznopsis, as P. Aphrodite, 
Schilleriana, amabilis, Stuartiana, Sanderiana, leucorrhoda, and casta will 
shave finished making their leaves, and from this time great care is needed 
