June, 1915.] THE ORCHID REVIEW. 175 
fairly well in the Intermediate house, but if a moist corner of the Cattleya 
house could be spared the few extra degrees of heat would be beneficial to 
them. In either division the plants should be kept well shaded from all 
strong sunshine, and in a position where they may obtain a moderate 
amount of fresh air daily. 
The distinct P. simulans is a warm-growing plant, and needs a moist 
‘shady corner of the hottest house. It is a plant that appears to attract 
small yellow thrips. These tiny insects frequently obtain a foothold low 
down in the young growths before the grower is aware of their presence in 
the house. It is therefore necessary that immediately the new growths 
commence to unfold their leaves they should be closely examined daily, and 
should any make their appearance the vaporiser should be employed for 
their destruction, or the growths may be periodically immersed in some 
safe insecticide. Owing to the rambling habit of this species it is some- 
what difficult to make it conform to pot treatment. A long, narrow 
teakwood basket is quite suitable, and should have a few large pieces. of 
‘crock placed over’ the bottom so as to prevent the: soil from passing 
through. Over the drainage place.a thin layer of sphagnum moss, and pot 
the plant firmly in some coarse osmunda fibre, filling up closely and firmly 
to the rhizome with fresh growing heads of sphagnum moss. Keep the 
surface of the compost moist at all times, and a slight dewing overhead 
whenever the weather is warm will conduce to strong flowering growths, 
and also check the attacks of insect pests. 
Cympipiums.—Such species as C. eburneum, C. insigne, C. Tracyanum, 
-C. grandiflorum, Lowianum, and var. concolor, also the distinct hybrids 
C. Doris, eburneo-Lowianum, Ballianum, Colmaniz, Alexanderi, Pauwelsil, 
Schlegelii, Gottianum, &c., should be included in every collection, the 
plants being particularly suitable for exhibition purposes, also for indoor 
decoration, and the flowers lasting a long time after being cut. At the 
present time the majority have passed their flowering stage, and if a plant 
requires more rooting space it may safely be repotted, but it is not advis- 
able to disturb them by repotting oftener than is really necessary. The 
old and well-known C. Lowianum generally flowers best when in a pot- 
-bound condition. | When repotting the plants, afford them sufficient space 
for several season’s growth. ; 
Cymbidiums, being strong deeply-rooting plants, should be grown in 
rather large pots. These should be about one quarter full of drainage 
materials, and for the compost use good fibrous turfy yellow loam, and 
osmunda fibre chopped up rather small in equal parts, with a little chopped 
sphagnum moss, a good sprinkling of small crocks, and coarse silver sand. 
Mix the whole together thoroughly. If the loam. be of inferior quality 
a moderate quantity of leaf soil added would be beneficial. In repotting, 
