CXV1H PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 
late variety planted on the same day is not yet in flower. 
Further remarks on these plants will he given on a subsequent 
occasion. 
Eiqiomatia laurina .—A flower of this interesting shrub was 
exhibited by Mr. W. Bull. 
Cucumber Disease. — Specimens from Earlswood of this 
mysterious disease were exhibited. Mr. MacLachlan thought 
there had been insects at the root. Col. Trevor Clarke said 
that change of soil was sometimes found to be efficient. He 
thought a sandy loam was the best soil for cucumbers. The 
Chairman said there had been much advice on the subject, hut 
nothing yet that he knew of was sufficient to prevent or cure 
the disease. 
Outgrowth from Stem of Passiflora quadrangularis .—A singular 
hypertrophied condition of the stem of this plant was exhibited, 
and referred to Rev. M. J. Berkeley for further examination 
and report. 
Disease in Asli. —Mr. Sydney Webb remarked upon the paper 
contributed to the last number of the Society’s Journal by 
Mr. W. W. Saunders, on the canker in Ash trees, so commonly 
met with. He thought that further light could be thrown upon 
the subject; he believed that the disease was to be attributed in 
the first instance to injuries inflicted by the larva of a moth, 
Prays Curtisellus. Mr. Saunders had only looked for cancer 
or cankerous external growth, and of course found no traces 
of insect action in shoots of the third year’s growth ; but 
had he looked for insect action in the younger growth he 
would have found it. It was well known that trees with 
smooth bark were very tender and easily eaten into; he had 
noticed many instances of the kind in which canker had set up 
where there had been traces of the moth ; he thought that the 
insect track killing the portion down which it ran caused a gap 
in the bark letting in damp, and that other influences such as 
uxudation of sap, insects, American blight, &c., .supervened 
until the cankerous wound hid the original cause from view. 
He instanced cases of canker in the Apple and Peach traceable 
to injuries effected by insects in support of his argument. 
Mr. McLachlan thought it had been generally considered that 
the larva named by mining down the pith of the young shoot 
destroyed it in its entirety, causing it first to droop and then to 
