September, 1921.] 
THE ORCHID REVIEW. 
and if given a light position in any house wherein plenty of fresh air is 
assured and where a cool intermediate temperature is maintained, the 
plants will grow and flower freely. As the plants grow best suspended 
from the i;opf*.rafters they should 1 be placed in pans or baskets, and for 
specimen plants the latter are preferable, being the lightest; over-large 
receptacles should always be avoided- It resents root disturbance, but 
when new rooting material is necessary, a compost rough and open in 
texture should be employed over ample drainage, and the materials pressed 
firmly about the roots. This Orchid requires plenty of moisture when 
growing freely, especially in the autumn when the bulbs are thickening. 
O. grande. —Plants of this species bloom about September, and as the 
flower spikes are produced when the pseudo-bulbs are partially developed, 
the supply of water at the roots should not be reduced till the latter are 
fully matured. Afterwards, while the plants are at rest, very little water 
will suffice to keep the pseudo-bulbs plump and foliage healthy. 
Sophrqnitis grandiflora. —Plants of this attractive Orchid which 
have been resting for some time will now be showing signs of renewed 
activity, and at this stage repotting may be done, but disturbance at the 
root should only take place when really necessary. Shallow pans are the 
best receptacles, and the usual Osmunda fibre and sphagnum compost 
forms the most suitable rooting medium ; it is important to fix the plants 
firmly into the material. During the growing season the plants should not 
be allowed to remain dry for any length of time; the greater quantity of 
water at the roots should be supplied when the new growths and flower 
buds are in process of development. 
Sobralias.— The most suitable time at which to pot Sobralias is soon 
alter the plants have ceased flowering. Root-bound plants should be given 
a shift into larger pots if specimens are required, and any that are 
considered too large may be divided. It is a difficult matter to separate the 
large fleshy roots without injuring them, and great care should be taken to 
preserve as many of these as possible. After shaking all loose material 
from the divided parts, cut off cleanly all broken roots just above where 
they are broken. Then put them in pots just large enough to accommodate 
them. Being terrestrial, the plants should be potted in the usual way, 
leaving the compost about an inch below the rim of the receptacle, and the 
crown of the plant on a level with the surface of the soil. Pots or teak- 
wood tubs should be used as receptacles, and these well provided with 
drainage to ensure a free passage for the abundant supply of water needed 
during the summer season. The plants should be potted firmly in a 
compost of good fibrous loam two parts, peat or Ai fibre two parts, and 
leaf-soil one part, with sufficient gritty material added to keep the mixture 
porous. The usual care should be exercised in watering newly potted 
