JAN.-FEB., 19T9.] THE ORCHID REVIEW. LS 
freely between them. All strong, well-rooted Sobralias will need copious 
waterings for some time to come. 
SHADING.—Towards the end of February it will be advisable to place 
the shading in position and in proper working order. It is at this season, 
when the plants have passed through the dull sunless days of winter, that 
thin-leayed Orchids easily scorch if the sun is allowed to shine upon them 
directly, hence the necessity of having the blinds in readiness should bright 
weather prevail. Too much shading is harmful, and the growth will be 
finer, more solid, and better developed in every way when grown under 
proper conditions of light, which consolidates the growth as made. In 
extreme cases it may be advisable to paint the glass of the houses with 
summer cloud or similar mixtures, but I do not recommend them unless the 
season is a very hot one. Permanent shading on the glass is harmful, and 
in any case will not be necessary for some little time. Roller blinds are in- 
dispensable in Orchid culture if the best results are to be attained. 
GENERAL Remarks.—Every precaution should be taken against fluctua- 
tions of temperature in the houses, as these, if drastic, may do much harm, 
and usually.the present period is one of a most changeable nature. The 
cleaning of the houses and plants should also have every attention. This 
is a most essential point, although owing to want of staff it has had to be 
neglected to some extent in many cases, but we may hope soon to have 
some of the men home again, so that arrears of work can be cleared off. 
Stocks of potting materials should be prepared, so that when the busy 
season arrives there is nodelay. A well arranged plan isa great help in 
getting through the necessary work during the busy season. 
I must congratulate our Editor upon another excellent year’s work, 
carried on under exceptional difficulties. It has required no little effort to 
keep the work up to its high standard during these strenuous times. May 
the Review extend its influence during the coming years of peace, and may 
it grow and prosper as its merits deserve. 
An OkcHID Funcus.—A parasitic fungus has been found on the leave 
of Ornithidium coccineum in the Kew collection which has been identified 
by Miss E. M. Wakefield as Hemileia Oncidii, Griff and Maubl. This 
fungus was described and figured in 1909 (Bull. Trimestr. Soc. Mycol. 
France, xxv. p. 138, t. 6), from materials obtained in the Orchid collections 
near Paris, being found upon the leaves of Oncidium Marshallianum, 
crispum, and varicosum. It is.said to be allied to H. americana, Massee, 
found upon Cattleya Dowiana, but to be readily distinguished by having 
much smaller spores. The.malady is not considered serious by growers, 
being easily checked by sponging with soap and tobacco water. - It takes 
the form of bright yellow patches on the under surface of the leaves, with a 
