128 TlMEHRI. 
neatness, the worm coming out as neatly as a hand 
may be withdrawn from a glove. 
Do you take an interest in the inquiry caused by the larva of the 
CEstrus — the Hypodermci bovis more especially? We are taking it well 
up in England, and I hope that much will be done to check it. The 
observations lately sent in shew that just a dab of what is known as 
" Cart Grease" is enough to choice the spiracles effectually and thus kill 
the maggot. But with regard to kinds attacking " ourselves" Humboldt 
recorded that in Brazil the natives (unencumbered with the protections 
we use !) suffered from larvae in their backs. It would be of some 
interest to us here to know how it felt to have a great maggot an inch 
long, or a dozen or two, feeding in one's back, that if you should have 
any acquaintance with the subject it would be most acceptable if you 
were disposed to tell us anything about it. 
♦ 
The Campbell Memorial.— While I was in London, 
Mr. G. LAWSON, the scuiptor who has undertaken to 
execute the bust of the late William Hunter Camp- 
bell, was good enough to show me the clay model, on 
which he is now working. The bust is already far ad- 
vanced, and, considering that the sculptor never saw his 
subje6t alive, the likeness is admirable. It is greatly to 
be hoped that the marble will soon be finished and placed 
in the Rooms of our Society, for which Mr. Campbell 
did so very much. 
Balata. — In a paper on " Proteid Substances in 
Latex," by J. R. Green, B.Sc, B.A., published in the 
Proceedings of the Royal Society, No. 242, occurs the 
following passage :-- 
A little later in the year Mr. Dyer kindly sent me a bottle of the 
latex of Mimiisops globosa, Gsertn (Sapotacece').* This differed very 
* [The well-known source of the Gum Balata of British Guiana, from 
which the specimen was obtained. The specimens were kindly procured 
by Mr. G. S. Jenman, Superintendent of the Botanic Garden, British 
Guiana.— W.T.T.D.] 
