THE ORCHID REVIEW. 5! 
Mr. Griessen’s wish that some of our Indian amateurs will also enable 
us to elucidate the query as to whether C. x Arthurianum occurs in a 
wild state, which still remains doubtful. 
oA a 
CALENDAR OF OPERATIONS FOR JANUARY. 
By H. A. BURBERRY, Orchid Specialist, King’s Heath, Birmingham. 
GENERAL TREATMENT. — For all matters relating to temperature, 
watering, atmospheric conditions, and cultural hints generally, refer to last 
month’s Calendar, as the treatment there set forth is equally suitable for 
the present month, which is usually more or less dull and wintry in 
character. If, however, there should be spells of bright and clear, frosty 
weather, the sun will begin to have considerable power, and this, together 
with the extra heat from the hot water pipes by night, will naturally call 
for a good supply of water being pretty frequently distributed on the stages, 
floors, paths, &c., so as to prevent the atmosphere from becoming over-dry, 
which would tent to exhaust the plants. 
SHADING.—We must now give a thought to shading, and, if new is 
required, to measure up and send off the order, or delays may occur which 
will prove very inconvenient. In many instances orders are not sent off 
before the need for the shading is actually felt, and then the manufacturers 
are so busy that they cannot possibly execute them without considerable 
delay. There is still some uncertainty which kind of shading is the best to 
employ, and I suppose it will always be so. If I was asked which was the 
best, the lath or the net, I could not candidly answer in favour of either. 
Both are good and serve their purpose admirably, it is therefore a matter of 
taste or choice. The net is cheaper than the lath, but the latter will last 
much longer, which comes to about the same thing. 
ONCIDIUMS NOT BLOOMING.—A good deal of disappointment is felt when 
an Orchid that has formed a pseudobulb large enough to produce a spike, 
fails to do so. Some species of Oncidium do this, and the cause can be 
summed up in two words, ‘Too Wet.” I refer to such species as O. 
sphacelatum, aurosum, micropogon, microchilum, crispum, Forbesii, 
varicosum, and some few others. If these are not given a good rest 
immediately the new pseudobulb is formed up, they frequently start into 
growth again from the base, to the detriment of the spike. Generally 
speaking it is best for Oncidiums to be kept pretty well rested during the 
winter, as they seem to like such treatment, and keep much healthier than 
when kept too wet. The same will also apply to Odontoglossums, which 
also keep healthier, and grow better, if a good rest is given when growth is 
completed. I am not referring quite so much to O. crispum and its allies as 
to such kinds as O. grande, Cervantesii, Rossii, citrosum, coronarium, 
