Marcu, 1911 | THE ORCHID REVIEW. 17 
for a plant that is not growing must be dying. One cannot always avoid 
plants going back, even in the best-grown collections. Constitutions of 
plants, like individuals, vary, and must be studied if success is to be attained. 
A plant properly potted and watered will usually require a larger receptacle 
before the compost is decayed, and become sour, but should there be any 
danger of this latter, don’t hesitate to repot it. I do not believe in top 
dressing, as I think it much better to renew the compost right through. 
CaTTLEyAs.—C. Warneri is now on the move, but must not on any 
account be unduly hurried, or the crop of flowers will be small, and their 
growth will be short of substance and strength. As soon as young roots are 
seen to be pushing, any that require it may be repotted, keeping them on 
the dry side until the roots are seen to be pushing through the compost. C. 
Warscewiczii (gigas) is also on the move, but I prefer to repot in the 
autumn after flowering, as I find the roots are growing and pushing through 
the compost all winter. I do not keep them so dry as is often practised, and 
I always have a satisfactory crop of flowers. C. Trianz and Percivaliana, as 
they pass out of flower, should be thoroughly overhauled, and any that 
require it repotted, thoroughly cleaned, and put in their growing quarters. 
La cus of the anceps and autumnalis type, that have been resting and 
kept dry since blooming, should also be treated in the same way as soon as 
new roots are seen to be pushing from the rhizome, and this is easily 
detected, by little lumps standing up on the rhizome, about the size of pin- 
heads. This is the best time of all to repot them. I do not believe in this 
class of plants being allowed to get straggling, and a long way from the 
compost, as the growths get weaker and weaker, and eventually die. The 
mixture recommended for Cattleyas in previous Calendars, will suit them 
admirably. 
Tuunias must be repotted annually, and are worth any amount of 
trouble to flower them satisfactorily. The compost I recommend for them 
is one half peat and one half loam, from which all the fine particles have 
been taken, mixed with some sphagnum moss and dried cow manure. The 
drainage should be ample, as they require a large amount of water when in 
full growth, and they should not be potted too firmly. They delight ina 
sunny position in the Warm house, close to the glass, and water must be 
very sparingly given them until the flower spike can be felt in the top of 
the new growth. One, two or more growths can be placed in a pot, 
according to requirements, and if wanted for exhibition up to a dozen, 
using a six-inch pot for the former up to a ten-inch for the latter. 
ANGULOAS ate now becoming active after their resting season, and 
should it be considered necessary can be repotted, using a compost like the 
preceding, but if the loam is not of the best quality use less of it, as 1am 
firmly convinced that unless it is of the best it is absolutely harmful. They 
