132 THE ORCHID REVIEW. [IMay,. 1907. 
germinating in very varying conditions, he has noticed that they were 
‘invaded by the fungus from the beginning of their life.” It is a very 
interesting paper which will repay careful perusal. We may. add that an. 
illustrated paper by M. Bernard appeared in our last volume (pp. 201-203). 
The other papers do not deal with Orchids, though they discuss 
numerous practical questions, the development and behaviour of hybrids in. 
other groups, and the question of descent generally, in a way. that should 
be of supreme interest to Orchidists. In short the volume is indispensable: 
to every hybridist’s library. 
CALENDAR OF OPERATIONS FOR MAY. 
By W. P. Bounp, Gatton Park, Reigate. 
CATTLEYA HovusE.—Many plants that flowered early in the year will now 
be growing apace, as well as those that bloom during the late summer 
months, and both will now require copious supplies of water. C. Mendelii 
and C. Mossiz will be the conspicuous occupants here during this month, 
together with their many glorious hybrids. _ Until the flowers are removed. 
from the plants they should be well supplied with water,. afterwards: 
reducing the supply till the young growths get well started. C. | 
Warscewiczii (gigas) and C. Dowiana aurea should from now be grown as: 4 
quickly as possible. Having been kept much drier at the roots than most 
other Cattleyas since the full development of last season’s- bulbs, they 
respond quickly when given a lively temperature and plenty of water, that 
is if they are well rooted. It should be borne in mind that these require 2 
fair amount of strong light, especially the first-named, in fact we like to 
admit as much sunshine as the leaves will stand without scorching. 
Cattleya Lawrenceana is once again more plentiful in collections ; and. 
this beautiful species should be kept well on the dry side after flowering, 
maintaining this course till the growths have made considerable headway: 
It is also advisable to place them where they have the full advantages : 
derived from a free circulation of air, such as a position. near. a. doorway~ 
If they can be suspended, so much the better. i] 
Cattleya intermedia and its beautiful varieties will now be passing out 
of flower, but the supply of water should not be reduced till.the new bulb: 
has reached full maturity. I think this mistake is often made by beginnetS — 
in Orchid growing, treating the varieties that flower from the immature 
bulbs in the same way as those that finish and ripen their bulbs before: ; 
flowering. Frequently this species will produce a second growth, and thes — 
occasionally flower, but it is seldom that any flower comes on the second! at 
growths on the albino varieties. Still, I like to get this second growth, | 
having found that when they grow away again the same season they 2 
invariably make much better growths the next year than.is the case when 
i 
