WESTERN HEMISPHERE. 
7 
drying influences of so much fresh air. Many of the flowering 
plants, from elevated or cool districts, as some of the Lselias, 
Cattleyas, &c., are positively benefited by being placed in the 
open air through the day, removing them back to the house at 
night; but in whatever situation they may stand, the whole must 
be carefully guarded from the scorching sun, or they are speedily 
disfigured beyond recovery. Through August and the two fol¬ 
lowing months a considerable number will form a second growth, 
and where it is desired to increase the size of the plant, or the 
autumn is found to be the natural season for this development, 
every encouragement should be given, and the utmost endeavour 
made to get all the new parts perfected before the arrival of the 
dull weather of winter. In the case of established specimens, 
sufficiently large, and that have already made one additional 
growth in the beginning of the year, it is far better by witholding 
moisture to keep them dormant, than to risk the flowering of the 
next season by the immaturity of a late growth. Through the 
winter, the rule to be observed will be to keep those which have 
completed their accessions in a satisfactory manner quite dor¬ 
mant ; and those which are still active, a state to be regretted, 
but not always prevented, gently growing, that they may not 
retrograde in the vigour of their shoots. It is necessary to 
remark that when once the excitability of a plant is aroused, it 
is very injudicious, or positively injurious, to attempt to check it; 
in such a case it is only left to determine whether the action 
shall be carried on quickly, or deferred by extending it very gra¬ 
dually, till a more promising season ; the state of the plant and 
affecting circumstances must settle the point. 
The propagation of orchidaceous plants is effected by the sepa¬ 
ration of the pseudo-bulbs; some kinds bear it to any extent, 
while others refuse it altogether. It is best, if possible, to have 
a terminal pseudo-bulb or recent growth to each piece, for ther 
are some which never break again from the old bulbs. In any 
case each portion should be provided with active roots at the 
time of separation, especially if they belong to the arborescent 
class ; they require no particular difference in treatment when 
divided beyond what will suggest itself on account of the reduc¬ 
tion in the number of roots, or rather less water, till again well 
established. Propagation is best done when the plants are 
resting. 
