304 THE ORCHID REVIEW. es 
: DISEASES OF ORCHIDS. incall 
THE subject of Orchid diseases, their prevention and cure, is. of great 
importance to Orchidists generally, and we have great pleasure. in inserting — 
the following communications which have reached us in response to 
communications in our last two numbers. The first relates to the “ Cattleya 
disease,” and the second to a disease of Dendrobiums, but whether both are 
due to the same cause or not is one of those questions which we hope to'see 
cleared up by the investigations which Dr. Burtt, acting for Messrs. James 
Backhouse and Son, proposes to make, and the results of which we hope to 
be able to report to our readers in due time. When we know the nature of 
the disease it will be more easy to suggest a remedy.— [ED.] pie 
“I should be glad if, in your next number, you would ask those of your 
readers who have specimens of the ‘aurea’ section of Cattleyas, which are 
infected with the Cattleya disease—as, for instance, your correspondent at 
p- 240 of the August number—to be kind enough to send us portions of the __ 
infected plant or plants for the investigation of the disease in our research 
laboratory. The specimens should be packed so as to prevent damage and 
loss of water in transit, clean, soft paper being used as packing material, 
and they should be accompanied by as much information as_ possible 
respecting conditions of growth, &c., to assist in a correct diagnosis of the 
disease. 
“Dr. ARTHUR H. Burtt, 
“Director, Scientific Department. 
“The Nurseries, 
ge a a 
Referring to the subject so usefully brought up by Arcus on page 258, a 
of your last issue, I send herewith a new pseudobulb of Dendrobium 
ochreatum which has “damped off” at the base. I have lost many 
basket, and it is common to both moss and peat. The disease by no means. 
confines its attacks to those subjects which are in a saturated condition, — 
for it not infrequently manifests itself during the “resting” period, 
although it is probable that the material may at one time have been damp. 
I hope other readers who have had similar trouble will give us the benefit 
of their experience in your columns, that in the accumulation of evidence it 
may be possible to arrive at the true causes and a remedy. 
F. H. Moore. - 
Liverpool. 
