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POPULAR SCIENCE REVIEW. 
Society, for the details. We may remark, however, that Mr. Wonfor has 
demonstrated that in blue butterflies the battledore scales are characteristic 
of sex. These scales are always present in the males, but are never found 
in the females. He has also found peculiar tasseled sexual scales in the 
males of white butterflies. He regards these sexual scales as analogous to 
the “ beard of man, the mane of the lion, and the plumage of certain birds.” 
He gives the following as the best mode of preparing the scales: — In 
obtaining the scales, I have found the best way to examine a wing is to lay 
it on a clean slide, place another upon it, and apply a moderate amount of 
pressifre. Upon separating the slips, plenty of scales from either side, in 
their relative positions, will be found on the glass slides. If required to 
mount, a ring of varnish may be run round, and when nearly set, a glass 
cover being laid on the slide, it requires only a finishing coat when dry to 
make it ready for the cabinet.” 
Professor Halford's and Professor Humphry's Anatomy. — This, in sub- 
stance, is the title of a pamphlet which has been forwarded to us from 
Melbourne. It is the reprint of a letter which appeared in the Melbourne Aye, 
and was signed “ Opifer.” The writer, however, is readily identified, and those 
who wish to make themselves further acquainted with the subject, should 
write to the publisher of the Age. The title is full of bitter personalities, 
but contains many important analyses of the respective views of the two 
Professors. We do not care to go further with the controversy about ‘‘a 
new muscle in the Ape’s leg.” Enough, and more than enough, has been 
said upon it already, and we are glad to think that the spirit displayed when 
the matter was first discussed has now ceased to exist. 
The Anatomy of the Lemuridcs. — The osteology of this group forms the 
subject of a valuable memoir which we have received from the author, 
Mr. St. George Mivart, F.L.S. Mr., Mivart mentions a fourth species of 
Indris, brought by M. Grandidier from Madagascar, and calls attention to 
the discovery, by the same explorer, of a new Lemuroid, with an accumu- 
lation of fat in the tail — ^which recalls to mind the well-known African 
A Monograph on Hedgehogs. — At one of the late meetings of the Royal 
Academy of Vienna, Herr Fitzinger presented a memoir on the Erinacese, in 
which he described all existing species^ and gave their habitat and synonyms. 
Three species, from North-east Africa, described by M. de Heuglin, are, it 
appears, new to science. 
