84 THE ORCHID REVIEW. (Marcu, 1913. 
when in full growth, and they must not be potted too firmly. Thunias 
enjoy a sunny position in the warmest house, placed well up to the glass, 
and exposed to the light, and water must be very sparingly applied to them 
until the flower spike appears at the apex of the newly-made bulbs. The 
growths may be potted up singly, or made up into specimens, according to 
the requirements of the cultivator. When in full growth, an occasional 
watering with weak manure water will be beneficial. These plants may be 
propagated by taking off portions of the old pseudobulbs, cutting them 
into lengths, and inserting them as ordinary cuttings in pots of coarse 
silver sand. When they commence to grow, and to push out roots, they may 
be potted up in small pots in the usual way. The cuttings should be 
placed in a warm propagating case, or they will succeed under a bell glass, 
placed in the warmest house, and protected from strong sunshine. 
CALANTHES of the deciduous section will need repotting during the 
present month, and are best done when the new growths are a few inches 
high and about to push forth new roots. The treatment as regards compost 
temperatures and watering of Thunias will answer the requirements of 
Calanthes, with the exception that the latter will not stand the strong rays 
of the sun like the former, therefore must have protection. The bulbs, 
before they are placed in their pots, should be thoroughly examined for a 
small species of scale which often infests them, and which, it is needless to 
say, must be removed. The pots must be thoroughly clean, and the 
compost nicely warmed, before the bulbs are potted. The plants must be 
grown from the beginning to the end without a check. In these deciduous 
plants it is during the early stages of growth that discretion is needed, for 
if over-watered before the roots are well hold of the compost failure is 
assured. Calanthes are most useful and decorative Orchids, and worth all 
the pains and trouble to bring them to perfection, but, unfortunately, they 
will not stand fogs. | 
PHAIUS is another genus of terrestial Orchids which will succeed in the 
same compost, and under the same conditions as regards watering and 
temperatures. Many of them will succeed in an ordinary plant stove, and 
make fine specimens, bearing handsome foliage and strong spikes of flowers. 
After the plants have ceased to flower, and the new growths are sufficiently 
advanced and about to produce new roots, any necessary repotting may 
have attention. They should be grown in fairly large, well-drained pots, 
and the plants should be potted below the rim of the pots, like ordinary 
plants. During the time they are in full growth they delight in an abundant 
supply of water at the roots, and must be shaded from strong sunshine. 
PERISTERIA ELATA may be treated as a Phaius, growing it under the 
same conditions and resting it in a nearly dry condition in a house ranging 
from 55° to 60° during the winter months. The foliage of these plants is 
