336 THE ORCHID REVIEW. [NoVEMBER, 1914. 
the same. It is much smaller than the female of C. macrocarpum 
(tridentatum), which is shown at t. 1752 of the Botanical Register, and has 
again appeared with Mr. Fraser. 
It may be added that C. macrocarpum occurs in Trinidad, British and 
French Guiana, Brazil, in the Bahia, Rio de Janeiro, Pernambuco, and 
Amazonian districts, and in Venezuela, in the latter occurring in company 
with C. Bungerothii, with which it is believed to intercross, yielding the 
remarkable polymophic C. splendens, whose history was given last month 
(pp. 316-317). KAW 
Aaa 
6 THE AMATEUR’S COLLECTION. 
By C. ALWYN HarrISON. 6) 
HIS month is a somewhat trying one, as owing to the variability of the 
weather usually experienced in November it is often a difficult matter 
to maintain an even temperature. If possible keep the thermometer 
ranging between 55° to 60° by day, with a slightly lower degree of warmth 
during the night. Ventilate freely as external conditions permit, but if the 
weather is foggy no.air must be admitted whilst this horror is loading the 
atmosphere. Immediately it clears off the roof glass should be washed. 
Damping will now need to be considerably diminished. On dull days 
a single syringing of the staging and path will be sufficient, but if the 
weather is bright, twice a day may be found necessary, but nothing is more 
detrimental to the health of any Orchid than to be grown in a cold, damp 
atmosphere. If excessive atmospheric moisture be necessary, it must also 
be accompanied by a rise in the temperature. 
In a garden. devoted to the culture of all manner of plants, there will 
probably now be.less outside work, and consequently more time can be 
spared for the houses. The present will be found a very desirable time for 
the cleaning of all the Orchid collections; scale especially may give trouble 
at this time. This is usually found on the rhizomes of the old bulbs, and 
concealed under the skin-like covering on the newer pseudobulbs, and 
is especially predominant on old Cattleya plants. The best method of 
eradication is to paint the affected parts with methylated spirit. 
If any Orchids have not been repotted this season, but are in fairly good 
compost, it will be better to defer disturbing them until the following 
spring. Plants repotted in November and December often fail te 
re-establish themselves with the same vigour as those repotted in the spring: 
Lelia anceps will now be commencing to throw up its long flower spikes, 
and these should be neatly staked, and the plants kept just moist. Cattleya 
labiata, the very beautiful C. Fabia, and other C. Dowiana aurea hybrids 
will now be in their full beauty, and others too numerous to mention. 
