THE ORCHID REVIEW. 11g 
with sun, 83°; night, 68°; morning, 65°. These houses will also require 
shading, and a very moist atmosphere kept up. Guard against over- 
watering the Dendrobiums just as they start into growth, more especially 
-D. Bensoniz and D. superbum, or the growths will damp off. Let both 
species be placed at the hottest possible part of the house, and keep a 
watchful eye for red spider on the first-named species, and likewise D. 
aureum, as it is these species which this pest generally first attacks. As 
stated last month, these figures are intended only as a guide; temperatures 
will vary according to the outside conditions, and, except for the cool house, 
I do not advocate a finger-and-thumb, cut-and-dried temperature; but, at 
the same time, it is not advisable at this season to let it fall much below 
that which is recommended. A fresh supply of hard tree leaves saved from 
last year may be brought in and placed under the stages, as advised in 
a former calendar, which throw off a nice moisture impregnated with 
ammonia, and is feeding to the plants. 
The new growths of Calanthe x Veitchii and C. vestita, if water has 
been withheld since blooming, and the plants rested in a dry position in an 
intermediate temperature, will now have new growths from one to two 
inches high and new roots pushing from the base, and when in this condition 
they are best repotted. I find that the nature of the compost for these is 
not of so much consequence as one might suppose, but what is of far 
greater importance during the season of growth is the position the plants 
occupy and the careful use of the watering-can, especially directly after 
repotting. Ours are potted in a mixture of good turfy loam, broken in 
small pieces (not chopped), to a bushel of which is added about a gallon 
each of broken charcoal and coarse silver or river sand, and well mixed up 
together. The pots are one-third filled with drainage, and the bulbs, having 
all the old materials shaken away and the old roots trimmed off, are re- 
potted into this new, sweet material, which is pressed down rather firmly. 
The base of the bulbs is inserted about half an inch, and secured in that 
position by a small stick, to which the top of the bulbs are tied. Calanthes 
succeed best if grown in pots singly or in pairs; full-sized pseudobulbs will 
want a 32-sized pot, a 48-sized pot being large enough for small bulbs. 
When the potting is completed the surface of the compost should be about 
half an inch below the rim of the pot, in order to facilitate the watering. 
They should then be placed in the warmest house near to the glass, a shelf 
being a most desirable place, where there is an abundance of light, and 
shaded only during very bright sunshine in summer. Give a very little 
water at first—once a week will probably suffice—gradually increasing. the 
supply as the leaves grow and the plant becomes strongly rooted; then 
treat like any other stove plant, simply thoroughly watering when the 
plants become dry. The disease known as the “‘spot,’’ which disfigures 
the foliage and bulbs, may be caused by insufficient. heat, light, or air, but 
