Nov.-Dec., 1919.] THE ORCHID REVIEW. 189 
Veronicus, and Ellerdale; an interesting series, for which Bronze Medal 
points were awarded. 
Messrs. A. J. Keeling & Sons, Bradford, staged a fine Cypripedium, 
which appears in the List of Awards. 
The Secretary regrets to report the death of W. R. Lee, Esq., of 
Plumpton Hall, Heywood, one of the earliest members, a lover of Orchids 
and a staunch supporter of the Society. 
By J. T. BARKER, Orchid grower to His Grace the Duke of 
Marlborough, Blenheim Palace, Woodstock, Oxon. 
q CALENDAR OF OPERATIONS FOR NOV.-DEC. 
E have now reached that season of the year when the shortness of the 
days, the absence of light, the great amount of moisture in the 
atmosphere, and the other changes of climate, makes it specially difficult to 
maintain that evenness of temperature which is so desirable for the well-being 
of our collections. It is most desirable at this season to maintain a proper 
balance of heat and moisture, and speaking generally, the atmosphere should 
be kept considerably drier than in the growing season. Fresh air should be 
admitted on all favourable occasions, and a damp, cold atmosphere must be 
avoided at all times, as such conditions bring the dreaded black spot, which _ 
not only disfigures, but may ultimately kill the plant. On the other hand, a 
hot and too dry atmosphere brings in its wake thrip and other insect pests, 
which also do irreparable damage. 
TEMPERATURES.—The lowest temperatures of the year may now be 
adopted, and every assistance should be given to plants that are at rest to 
remain so, whilst those which make their growth during the winter months 
should have every encouragement to make strong and clean’ growth. 
Suitable temperatures for the different divisions are as follows :-— 
East Indian house, 60° to 70°. 
Cattleya House, 55° to 60°. 
Mexican and Intermediate houses, 50° to 60°. 
Cool house, 50° to 55°. 
Only sufficient heat should be used in each department to maintain the 
required temperatures, for an excess of heat is always injurious. During 
extreme weather, when much fire heat is necessary, a close stuffy 
atmosphere can be prevented by an increase in the amount of atmospheric 
moisture, and by slightly opening the top ventilators. 
VENTILATION of the different houses during the damp cold days of winter 
requires the greatest attention, and even the most experienced cultivator is 
sometimes at a loss to know exactly the best thing to do, but as fresh air is 
