370 THE ORCHID REVIEW. [ DECEMBER, 1906. 
A. Warburton, Esq., Haslingden (gr. Mr. Dalgleish), received First- 
class Certificates for Lelia-cattleya Decia and Cypripedium X Germaine 
Opoix. 
S. Gratrix, Esq., Whalley Range (gr. Mr. Cypher), received a First- 
class Certificate for Cattleya X Hardyana alba Gratrix’s var., and an Award 
of Merit for Cypripedium x Leoniz Gratrix’s var. 
W. Farrer, Esq., Carnforth (gr. Mr. Proudlock), exhibited Cypripedium 
x Chapmanii magnificum and C. X leyburnense. 
E. Rogerson, Esq., Didsbury (gr. Mr. Price), exhibited Cypripedium X 
Actzeus var. 
Messrs. Stanley and Co., Southgate, London, received an Award of 
Merit for the pretty little Odontoglossum X Duvivierianum, a natural 
hybrid between O. cordatum and O. apterum. They also sent Cattleya 
labiata pardina, C. X Fabia alba, and several other good things. 
Mr. D. McLeod, Chorlton-cum-Hardy, received a Bronze Medal for an 
interesting little group. 
CALENDAR OF OPERATIONS FOR DECEMBER. 
By J. M. Brack, Streatham. 
TEMPERATURES, DAMPING, AND FIRING.—With the closing of the year, 
vegetation is at its lowest ebb in the Orchid houses. At this season every 
effort should be made to keep from exciting the plants too much by great 
fluctuations of temperature, too little water followed at intervals with too 
much, too dry an atmosphere followed by a too wet one, and all kind of 
extremes. The temperatures advised last month may be lowered a degree 
or two during the colder weather of December, and every effort made to 
keep them steady. The sun does not now get very high, and rises late and 
sets soon, and many days pass in smoky districts without its ever being seen 
at all; so that even the day temperatures will nearly entirely depend upon 
fire heat, and damping will be largely regulated by the amount of fire heat 
necessary to keep the temperatures at the required degree. During crisp, 
frosty weather, when the pipes must be kept hot, one may be compelled to 
damp more frequently than seems reasonable, but rather than have a 
“steamy ” atmosphere, allow the temperatures to drop considerably. I 
would refer the reader to the January Calendar for further details. 
VENTILATION is a work which requires much consideration during the 
dull and cold season, but only in extremely cold weather, and during fogs, 
should the bottom ventilators be closed tight, and in the morning when 
the temperatures are low. The top ventilators can be sparingly used 
during mild weather. The atmosphere should never feel oppressive or 
stifling—no matter in which house. 
