108 
rorULAR SCIENCE REA^IEW. 
butterflies, the wings of which are mounted and the bodies painted in, 
sepia. He says : “ It may interest your readers to hnow of a somewhat 
difl'erently prepared collection, the work of a deceased lady, in this neigh- 
bourhood, which for beauty and perfection exceeds anything I have yet 
seen. They comprise two large volumes, one of butterflies, the other of 
moths, and though executed between thirty and forty years ago, retain all 
the brilliancy of the recent insects. The mode of mounting is as follows : 
The wings, carefully separated, are laid on the paper, which is previously 
gummed to the exact extent of the surface to be covered, the surplus gum 
removed, blotting-paper laid over them and pressure applied until they are 
dry. The wings are then removed, leaving a correctly nature -printed 
representation. The body, legs and antennae are then painted in colours. 
In the collection are many of our rarest British species, such as the Camber- 
well Beauty, &c. They are not always laid out open, but are in every 
natural position : with expanded wings, in postures of rest, or poised upon 
leaves or flowers painted with extreme accuracy and with much artistic 
talent. The sheets on which they are displayed are mounted in a volume, 
furnished with a lock, and are thus kept from light and air. The result in 
the preservation of all their colours is most remarkable.” 
Xaturalist's Directory. — The excellent directory, which is being published 
in the Proceedings of the Essex Institute, Salem, United States, is not yet com- 
pleted. In the two last numbers of these Proceedings (Nos. VI. and VIL, 
vol. 5), the list of writers on insects is continued and completed ; those on 
crustaceans, worms, molluscs, radiates, protozoa, and parasites, are also com- 
pleted. An .appendix is furnished supplying names received since print- 
ing some of the list^. This includes five pages of names of workers in 
the following subjects : — geology, physical geogr.aphy, minerals, metallurgy, 
palaeontolog}', anatomy and physiology, microscopy, botanj", archaeology, 
ethnology, mammals, birds, fishes, insects, .and molluscs. 
A Catahyuc of the North American Birds in the Museum of the Essex 
Institute has been prepared by Hr. Elliott Cones, and is published in No. 
VII. of the Proccedi/if/s of the Essex Institute. 
Fhscidaria Campanulata. — There is a very excellent paper, accompanied 
by two good illustrations, on this subject in the Last volume of the Proceed- 
infjs of the Bristol Naturalists Society, which we have just received. The 
pap<;r was read about twelve months since by Hr. C. T. Hudson, M.A., but 
it contains such excellent matter that we have much pleasure in bringing it 
under the notice of our readers. The author deals with some important 
anatomical points, and he gdves .some interesting facts in connection with 
the habits of Elo.scularia. 
The Silhworm culture. — A paper on this subject, in which the history o-f 
tlie progress of the silkwonn disease, and of the mode of comb.ating it, is 
accurately and })opularl}- stated, will be found in the Ilcrue des Deux Mondes 
for t)ctober. It is from the pen of M. Bayen, of the Academy of Sciences. 
The same number contains a sketchy but instructive p.aper by M, Laugel on 
the eye and vision, in wliich the recent works of Helmholtz and M.ax 
Schultze are reviewed. 
Structure (f the Shell of Crustacea. — Mr. J. Shidc has a short paper in 
the Journal of the Quehtt Club for October, in which he describes tho 
