xlii 
JOURNAL OF PROCEEDINGS. 
rate the back of the pannels, or wooden frame-work of the pictures, 
(which especially harboured and attracted the insects,) with a so- 
lution of corrosive sublimate or some other matter, or with Kyan’s 
patent solution, which would destroy the insects. Care, however, 
should be taken not to employ any materials which would affect 
the picture itself. 
Mr. Sells objected to the employment of any metallic salts, as 
liable to injure the colours, and recommended a strong infusion of 
colocynth and quassia, together with spirit of turpentine and spirit 
of camphor, which he considered would form a harmless remedy. 
Mr. Hope recommended the immediate removal of the wooden 
guards of the pictures, and suggested the application of a solution 
of resin anime upon the back of the pictures. 
Mr. Waterhouse considered it advisable to have the guards 
formed of cedar instead of oak, which latter was very liable to the 
attacks of the Anobia, and recommended that the backs of the 
pictures should, if possible, be subjected to the action of the fumes 
of prussic acid, by the employment of a false temporary back, which 
he had found sufficiently powerful to kill many hundred caterpil- 
lars, even where a single drop only had been used. 
Dr. Blundell proposed washing the backs of the pictures with 
the expressed juice of green walnuts, as a very powerful bitter, as 
well as with pyraligenous ether. 
Mr. Bell considered that, as the subject was one of considerable 
importance, it would be desirable that a committee should be formed 
for examining the state of the pictures, and experimenting upon 
articles of wood attacked by Anobia. 
Mr. Westwood also called the attention of the Society to an ad- 
vertisement which had appeared in the newspapers of the preceding 
day, announcing the sale of a powder, a solution of which would 
have the effect of rendering turnip-seed completely free from the 
attacks of the turnip-fly, which statement, in consequence of the 
discovery of the larvae and eggs of the Haltica nemorum, was evi- 
dently incorrect, and calculated only to deceive purchasers. 
He also exhibited specimens of the larvae of a Lepidopterous 
insect of considerable size, found in great numbers in a wheat- 
stack near Bristol, and communicated by Mr. Raddon; as well as 
several small dipterous insects belonging to the family Muscidce, 
found in the same situation. 
Mr. Ingpen communicated a letter received by him from Mr. 
Smith, containing an account of the natural history of one of the 
Cynipidce , which inhabits the small flat galls on the under-side of 
