May, 1915.] THE ORCHID REVIEW. 143 
have deteriorated through loss of roots or other causes, will also begin to 
make fresh roots at this season, and may be repotted and started afresh. 
In the case of unhealthy plants it is best to divide and repot the growing 
pieces separately into as small pots as possible. Cut off all useless back 
bulbs; about three bulbs behind each leading growth is quite sufficient. 
The pots for these Cattleyas should be filled to at least one-half their 
depth with clean crocks, and the larger the pot the more drainage becomes 
necessary. Pot the plants in a mixture of good hard osmunda fibre and 
Ar fibre in about equal proportions, and mix them well together. 
When preparing the osmunda fibre it is advisable to remove the brown 
mossy substance, as it retains moisture for too long a time, causing the 
fibre to decay prematurely, it..also binds so closely together that it is 
difficult for the roots or water to pass freely through it. 
When the plants have been repotted place them on the shady side of the 
house, and for a few weeks afterwards afford water with extra care, merely 
watering or sprinkling the compost around the edge of the pot to induce 
the roots to grow. If carefully done the centre of the plant will be kept on 
the dry side. As the plants become re-established, increase the amount of 
root watering gradually, and afford more atmospheric moisture. 
Young beginners should carefully study the plants, and learn to avoid 
over-watering all Cattleyas, Lzlias, and their hybrids at all seasons, as old 
and experienced Orchid growers know well that greater numbers of these 
plants have been injured through over-watering than from any other cause. 
Afford the plants plenty of ventilation whenever practicable; thus, in 
mild weather, the bottom ventilators should be wide open, both by day and 
night. During warm and bright weather the top ventilators may also be 
opened for several hours during the middle of the day, but cold draughts 
or strong currents of dry air from several different openings must be 
avoided. 
East INDIAN HoUSE.—In this house the greater number of the 
Phalznopsis, as P. Schilleriana, Aphrodite, amabilis, and Sanderiana will 
have passed out of flower, and have commenced to make new leaves, also to 
show renewed activity at the root. This is, therefore, the proper season for 
ascertaining if new baskets, pots, or cylinders are required, or if the 
potting materials need to be renewed. Whichever receptacle is preferred 
it should at least be three-parts filled with drainage materials, using only a 
thin layer of sphagnum moss on the surface. These plants should have a 
position afforded them on the shady side of the East Indian house. After 
root disturbance very little water will be necessary, merely spraying the 
moss on the surface occasionally to keep it fresh and green. : 
DENDROBIUM PHAL#NopsIS.—At the present time plants of this 
beautiful and useful Dendrobe have started to grow, and will quickly push 
