330 THE ORCHID REVIEW. [NOVEMBER, 1906. 
plants has also broader leaves, and a dwarf scape much like the one now 
figured. ; 
A very interesting experiment made in the collection of J. Gurney 
Fowler, Esq., has just been recorded (Gard. Chron., 1906, ii. p. 239). 
Acting on the suggestion that the plant should be tried in a Cool house, as 
the earlier ones seemed to have been killed by being kept too warm, he 
placed the greater number of his plants with the C. insigne varieties, where 
several are now in bloom, all with sturdy foliage, equal in vigour to the 
specimens of C. insigne. One of the best plants was allowed to remain in 
the warmest Cypripedium house, and this is not nearly so vigorous or 
healthy looking. 
CALENDAR OF OPERATIONS FOR NOVEMBER. 
By J. M. Brack, STREATHAM. 
OUTSIDE the Odontoglossum house, and excepting some Cypripediums 
and some Miltonias, few plants are now in active growth. A few plants in 
the Cattleya and Intermediate houses, such as Cattleya Lawrenceana, Lelia 
purpurata, some Phaius, and other odds and ends, may not have finished 
growing, and should be treated as growing plants with regard to watering, 
but always bearing in mind that the days are now short and evaporation 
slow. 
Many plants are developing their spikes, such as Lelia anceps, L- 
autumnalis, many Cattleya hybrids, Coelogyne cristata, &c., and these 
should never be allowed to get very dry, or remain so for long, so that the 
growing spikes receive no check. Plants which have finished, aud have now 
entered on a period of rest, should require only sufficient water to keep the 
bulbs plump, but it is bad treatment to let the pseudobulbs shrivel before 
applying it, and then wait until the plant is again in distress before giving 
more. This treatment is weakening for the plant, and may start it to grow 
prematurely. Keeping Cattleyas uniformly wet during the winter never yet 
made them start to grow before their time. To dry them up severely 
concentrates, as it were, the resting period, and then when water is applied 
they may start to grow. If the atmosphere is kept airy and on the dry side 
among resting plants—which is as it should be—leaf transpiration is COM 
siderable all the winter, and if there is no moisture at the root to replace 
this, the plant will, so to speak, consume itself, and become lighter 
weight. 
It is a mistake to dry either Dendrobiums or Cattleyas to any severe 
extent, with the intention of giving them a thorough rest. One is quite safe 
to water the latter, and other evergreen species of a similar nature, wit 
they are dry, but our experience has taught us that there are several which 
require the drying to be somewhat more accentuated than is the rule. 
