THE ORCHID REVIENW. 59 
this insect. The directions are as follows :—Firstly, remove all old 
_ pseudobulbs or new growths which bear traces of having bred, or are 
still breeding this pest, and burn them. The old pseudobulbs may still 
afford shelter for the adults, whilst the premature new breaks may be in 
the act of breeding young. Afterwards, let the plants be subjected to 
fumigation with X. L. All insecticide. This having been done the rest 
is easy. The plants may go through their natural course of resuscitation 
and eventually be potting-up, the only further fear of the fly being that 
some few of the eyes, yet dormant, may contain living eggs of the insect, 
but this time only can prove. As these new eyes develop into young 
breaks or growths, a sharp look-out must be kept on them, and, probably, 
it will be found that about ten per cent. are really affected. This can be 
told by the abnormal growth at the base, whilst the apex appears to taper 
off to a point more than usual and makes but little headway. These 
should be cut off and burnt. Under this treatment, all dread of the fly 
disappears. If, however, these newly imported plants are allowed to breed 
the flies, and they escape, there is no telling what trouble may ensue, for 
the adults would then be free to attack every Cattleya in the house, the 
only cure for which would be the cutting off of the new growths and 
ruin of the plants. 
There are two seasons when Masdevallias may be re-potted; one of 
these is during the present month, or before flowering, and the other from 
June to July, or after flowering. I prefer the former. Many of these may 
therefore now be done, which will relieve the work to some extent in the 
busy months of June and July. M. Harryana and its numerous varieties, 
M. ignea, and M. Veitchiana, are now just becoming very active, emitting 
new roots in great profusion, which quickly take hold of the new compost, 
and thus the plants soon become re-established, and look none the worse 
for the disturbance. 
As a compost none is better adapted for the free growth of these 
than that advised for Cypripediums. The draining of the pots and the 
method of potting should also be performed in the same manner. Lean 
also towards small pots, for the plants can be the better secured and are 
much more likely to grow well than if having too much pot room. 
Throughout the winter up till now Masdevallias will have been receiving 
but little water, but now, after re-potting, the compost should be kept just 
moist enough to encourage root action. The warmest end of the Cool 
house, or a cool, moist part of the Intermediate house suits them well 
during winter, but during summer the former is decidedly the best. 
Miltonia vexillaria is another Orchid that can be re-potted at this early 
season with great advantage, as it commences now to make an abundance 
of roots. If done now, the plants quickly re-establish themselves, and by 
