96 THE ENTOMOLOGIST. ” 
quercus, three Orgyia pudibunda, and two pupe of Pieris rape, in 
one of my breeding cages, upon the mantelshelf of my sitting 
room, with a view of forcing them. “The following was the very 
gratifying result:—On the 18th a fine male O. pudibunda made 
its appearance, followed on the 20th by another, the remaining 
one (also a male) not coming out until this morning; one of the 
P. rape hatched on the 22nd, the other I find is dead; on the 
23rd the first of the S.carpini (a male) appeared, and on the 
following day a female, who has laid about sixty eggs; no more 
appeared until the 27th, when I discovered another male, followed 
on the 28th and 25th by a female and two more males; the 
B. quercus have not yet shown themselves. I may as well mention 
that the S. carpini and P. rape emerged between five and six p.m.; 
the O. pudibunda in the morning.—Epmunp SHUTTLEWORTH; 
59, Charlotte Street, Portland Place, W., February 29, 1880. 
THE ERADICATION oF Mires.— Some time since, on my return 
home after a few weeks’ absence, I found these dreadful pests 
causing much havoc in my boxes. After removing the specimens 
most affected I treated the rest with a solution of carbolic acid, 
washing over part of the inside of the boxes with the same 
solution. After this treatment for some days I placed some of 
the dust, which collected at the bottom of the boxes, under the 
microscope, and to my surprise found that the mites were not dead. 
I then tried bichloride of mercury (common sublimate) and cyanide 
of potassium successively, but with no better result. I then 
determined to try carbon bisulphide (the vapour of which has 
been used with tolerable success for the extermination of 
Phylloxera, by the gradual decomposition of sulpho-carbolate of 
lime), and poured a few drops of the pure liquid into each of my 
boxes, closing them at once, and renewing the dose after a few 
days. On examination of the dust I then found them all killed. 
It is essential for their destruction that the boxes be charged with 
the vapour for some days, otherwise ouly the perfect insects will 
be destroyed. The chief objection to the use of this chemical is 
its bad smell, but it has the advantage of entirely evaporating 
on leaving the boxes exposed for an hour or so.—N. C. Granam; 
Silwood, Tulse Hill, March 7, 1880. 
Errata.—Page 62, line 9 from foot, for “silene” read 
“ Selene”; and line 4 from foot, for “ Iriglaus” read “ Juglans.” 
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