Mar.-ApPRIL 1920.] THE ORCHID REVIEW. 45 
growths are a few inches high, and are about to push forth new roots. 
Previous to repotting it is advisable to thoroughly overhaul and closely 
examine the bulbs for scale and any other insect pest which may infest 
them. Care must be taken whilst cleansing the pseudobulbs not to injure 
the eyes or young growths at the base. The old dead roots may be cut 
off to within an inch or so, to form a support that will keep the plants 
steady until the young roots have a firm hold of the new compost. The 
pseudobulbs may be repotted singly, or three or four large ones, or even 
more, may be potted together in larger pots. Perfect drainage is essential, 
and the compost should consist of half turfy loam from which the earthy 
particles have been shaken, one-fourth chopped At fibre, and one-fourth 
dry cow dung, with a moderate quantity of live sphagnum moss, small 
crocks, and coarse silver sand. These materials should be well mixed 
together, and allowed to become warm before being used. When repotting, 
the compost.should be made moderately firm, allowing sufficient space for 
a top-dressing at a later period, when the plants have become thoroughly 
established and are growin rapidly. For several weeks after repotting the 
plants will require little or no water until the new roots have freely entered 
the new material. Their surroundings should be kept moderately moist 
by damping between the pots occasionally. When the roots have got 
a thorough hold of the new material, and the growths have made 
considerable progress, abundance of water is required, and an occasional 
watering with liquid manure is beneficial. Care should be taken wher 
repotting the plants that the compost is neither too wet nor too dry. 
Puatuses will succeed in asimilar compost to Calanthes, and require 
similar conditions, both as regards temperature and other details. Those 
that are in need of new rooting material should have attention just before 
the new growths commence to push roots. 
CyYMBIDIUMS.—There are now so many beautiful hybrids of this sanity? 
grown genus, in addition to the species, that no collection is complete 
without some of them. As decorative plants, or as cut flowers, they have 
few rivals, and deserve extended culture. They succeed in a cool 
Intermediate temperature, with an abundance of fresh air; in fact they 
succeed if treated like warm greenhouse plants, which is no mean consider- 
ation in these days of dear fuel. They-delight in a compost, similar to that 
used for Calanthe, and resent disturbance of the roots more than many 
Orchids; therefore only those that are in want of new material should be 
disturbed. 
CypripepiumMs.—The potting of these ened winter-blooming ‘alanis 
should be attended to as fast as they pass out of flower. Should there be: 
any danger of the compost becoming decayed before another season, it is 
much the best practise to repot them now. A suitable compost has been. 
