246 THE ENTOMOLOGIST. 
Leucania or Nonagria. Will the application of any amount of 
the above solution prevent grease in these insects? If so, 
then, indeed, we are without excuse, if we have a greasy 
specimen in our cabinets. I am sure that, if this meets his 
eye, Mr. Doubleday will kindly answer the following ques- 
tion:—Take six specimens (fresh) of each of the following 
insects, — Sesia Bembeciformis and Apiformis, Nonagria 
Typhe and Lutosa; apply the solution and place them in a 
box. Let nothing else be done; and will Mr. Doubleday 
guarantee that, at the end of six months or more, there shall 
not be a greasy specimen among the twenty-four insects? If 
so, can say no more. As regards mites, Mr. N. says he 
assumes that camphor is used to prevent their attacks. Most 
unquestionably; and I firmly believe that it does do so. 
Like him, I am no believer in what is called “ spontaneous 
generation ;” but surely he will allow that mites may, and do, 
find admission into his cabinets, or store-boxves, by other 
means than either this or the unhappy transference of a 
mite-bearing specimen into his collection? According to 
my present light (but Iam open to conviction) I am aware 
of no infallible remedy against grease, except the removal of 
the contents of the body; and, as regards mites, I have found 
no box or cabinet impervious to their insidious entry, however 
managed; and that, where there is no camphor, there are 
more mites. In saying this I do not mean to imply that 
the application of Mr. Doubleday’s solution may not be an 
equally, or more effectual, preventive. I may add that, in 
general, the only way to keep a collection in really good 
order is constant supervision.—[Rev.] J. Greene; Apsley 
Road, Redland, January 8, 1871. 
Bean Weevil.—Will you kindly advise under the following 
circumstances :—A quantity of beans, which was bought for 
seed, is infested by a small Coleoptera; the beans were 
apparently intact, yet, on opening some, the beetle will 
be found inside. What is wanted to be known is, what will 
kill them. Will the mere fact of the cold and wet, to which 
they would be exposed when the beans are set, kill them? 
or will some sort of washing or dressing be required to 
destroy them? JI know you have long studied economic 
Entomology, and should, therefore, feel much obliged by the 
benefit of your experience being brought to bear on the 
