SEPTEMBER, 1912.] THE ORCHID REVIEW. 275 
effort should be made to repot as many as possible of this class of plants 
that may require it, as they attain the desired condition, for the sooner they 
are established in the new material the better. Cattleya Warscewiczii 
(gigas) is one of the numerous subjects that will require attention during 
the present month, and no plant that I know pays better for any attention 
bestowed upon it to induce it to produce its most lovely flowers. 
MILTon1IAs.—Plants of Miltonia vexillaria, and its hybrids, that were 
not repotted as advised last month, should be done as they reach the 
desired condition. 
DENDROBIUMS.—The eS of this genus must be gone through at 
intervals, and those that have matured their growth removed to cooler and 
lighter quarters, as advised last month. The amount of moisture, both at 
the roots and in the atmosphere, must be considerably reduced, but 
absolute dryness of the rooting material must be strictly guarded against. 
It is essential that these plants should be exposed to plenty of light and air 
to consolidate their growths. Plants that are still growing should have 
every inducement given them to complete their growths as quickly a 
possible, so that they may be treated in like manner. Plants of D. 
Phalznopsis are fast pushing up their flower spikes, and this is an 
advantage, especially where autumn fogs are prevalent, as these have a 
pernicious effect on these beautiful flowers. The plants must not be allowed 
to suffer for want of water at any time, and until their flower spikes are 
removed the supply must be ample, after which much less will suffice. D.- 
formosum, having finished growing, is about to expand its lovely white 
flowers. It blooms at a season when Orchid flowers are scarce, and is 
doubly useful on this account, so that it should be grown freely wherever 
its requirements can be satisfied. The treatment required at this season is 
precisely the same as advised for D. Phalenopsis. Evergreen Dendrobiums, 
such as D. Farmeri, D. thyrsiflorum, &c., are now in full growth, and when 
they have reached maturity they should receive similar treatment to that 
afforded to the deciduous species of this useful family of plants. 
ODONTOGLOssUMS.—At the present time there are large numbers of 
‘Odontoglossums, both species and hybrids, that have started well into 
growth, and where these plants are cultivated largely it is advisable to 
commence to repot them as early in this month as possible, taking the 
earliest plants first, and following on with the others as they become ready. 
The compost advised for Miltonias last month will answer their require- 
ments, but they should be potted a little firmer than the former. Should 
the weather be bright the plants. must be carefully shaded until they 
become re-established. They must have as much fresh air as possible, 
especially when the outside temperature exceeds 50°, and the atmosphere is 
humid. Should, however, the outside conditions be hot and dry, it will be 
