au Miscellanies. 
_ thor of the pamphlet, faithful to the most important interests of man- 
_ kind, regards their moral and religious interests as superior to all oth-. 
ers, and justly considers all systems as defective which leave them out 
of view, and of course as erroneous if they tend to pervert the mind 
of the youthful pupil. 
a 18, cal of the Wiss of Natural Sciences of Philadel- 
pie Th April No. contains communications, 
1. On the electrical properties of Caoutchouc,* by Prof. Johnson. 
2. On two new species of Salamander, by Prof. Jacob Green. 
3. On fifteen new recent and three fossil Bpevies of shells, by T. 
A. Conrad. ¢* > 
. ‘wore fossil bones of the Megalonys, by Dr. R. Harlan. - 
5. Ona fossil fucus, by the same. 
_ 6. On some parasitic worms, by Dr. S. G. Morton 
a 7. On new American emepierous insects, by Thomes cota 
/gontinu Ons, &c.. &c. 
Jn proport ion to its age, no infkuton in this country has done. more 
cience t nan the Philadelphia Academy, and its museum—which 
is extensive and various, and kept in fine order—has received, during 
the last year, a valuable addition, in a collection of fossils ;, being that 
made by the late Mr. Clifford, of Kentucky, and till recently kept at 
: ~ Cincinnati. It has been purchased by Mr. J. P. Wetherill and gen- 
* erously presented tothe Academy. In this collection are some bones 
"of the Megalonyx, from the White Cave in Kentucky.+ These bones 
“form the subject of an interesting memoir, by Dr. R. Harlan, ‘who ob- 
serves, that with teeth constructed after the manner of those of the sloth, 
the skeleton presents a sinigliedmixial of characters, peculiar to the 
Ant-eater, the Armadillo and the Orycteropus. _ Mr. Ha sciakare s that 
the Megalonys i is about one third less than the Megatherium, which 
Cuvier estimated to be seven feet and four and a half inches high; and 
that the individual Megalonyx, whose bones Dr. Harlan examined, 
was about five feet high and of the size of a common ox, @ ‘although it 
did not appear to be more than three fourths grown, Along with the 
tie 
. 
: = — an spree is given in the present number of this Journal. 
t ty, one hundred and twenty miles south west of sole 
on i bank of Green River. It is one of the saltpetre caves, - which are nu ° 
in the limestone regions of the West, and in which human mummies, dried and im- 
putrescible, have been often discovered, being the bodies of some of the aborigines. 
_ * 
