302 Miscellaneous Intelligence. 
points out the areas of greatest mean heat, and his inferences there- 
fro Connected with this subject, he discusses the relations and in- 
ane of vapors in the atmosphere, and also of electricity in great 
storm 
13. Liadripition oF a portion of the lower Jaw and a Tooth of the 
Mustodon Andium; also of a Tooth and pepe of the Femur of a 
Mastodon from Chile ; ; by Jerrriss Wym 10 pp., 4to, with two 
plates. From Gilliss’s Report on Chili, meng iii—Dr. Wyman sustains 
the view that there are remains of two species of Mastodon in South 
America, the M. Andium and M. Humboldtii ; and possibly a third 
on ili. 
A Memoir on the Extinct Sloth Tribe of North America; by 
hte Leipy, Prof. Anat. Univ. Pennsylvania, etc. 68 pp., 4to, with 
16 lithographic Fee: (from the Smithsonian Contributions. to Knowl- 
edge).—Dr. has here reviewed the facts relating to the extinct 
Sloth tribe of eik America, and = much that is new from spe- 
cimens under his examination. species described are Megalonyx 
Jeffersonii Harlan, Megalonyx dissimilis Leidy, Ereptodon priscus Let- 
dy, Mylodon Harlani Owen, Megatherium mirabile Leidy (the North 
American Megatherium, which Dr. Leidy regards as i from the 
M. Cuvieri of South America. ) The sinus are excellen 
15. Contributions towards a Knowledge of the Mores "Invertebrate 
Fauna of the Coasts of Rhode Island and New Jersey; by Prof. J. 
Levy, M.D. 18 pp. 4to, with 2-4to plates. Philadelphia, 1855. (From 
the Jour. Acad. Sci., Philad., vol. iii, 2nd Series.) —This peest: = 
n 
y 
four in the branchial dente of- the Glelanieie pugilator. 
. An Essay on Meteorites ; by R. P. Gree, F.G.S. 40 pp. 8v0, 
Nor 1855. Manchester.—This important cate was originally issued 
as an article in the Philvacihaasti Magazine for November and De- 
cember, 1854, and is now published by the author with additions, in 
which he considers at some length the lunar theory of meteorites. 
gives a catalogue of known meteoric falls, and compares them for dif- 
ferent periods and countries. He concludes, that the origin of meteor- 
ites “is not within the limits of the atmosphere, and that some of them 
at least cannot have had a lunar origin ;” that they are probably dis- 
tinct in nature and orbits from ordinary luminous meteors; and that 
the falls are least frequent when the earth is in perihelion, and most 80 
it is in aphelion, the mean system or mass of the bgseers being 
in their perihelion; and finally, that they may be reasonably consid 
ed as belonging to the group of — or astciday atid therefore 
as of the nature and conditions of aster 
1%. Synopsis of the ctor ara af ime British Paleozoic Rocks ; 
Rev. Apam Sepc M.A., F.R.S., ete., with a Systematic 
of oe British Palmonsie "Fossils in the Lelie ae 
| contribution to science under the auspices of Prof, Spe wick, 
and the G eological part is the result of his special labors. We defer 
12 another number a farther notice of the volume. 
