vi CONTENTS. 
XXXIX. Brief Notices of several localities of Meteoric Iron ; ta we 
CuarLes UpHAM SHEPARD, - 249 
XL. Appendix to Article XXX, On the Origin of some of the 
Earth’s Features; by James D. Dana, - - 252 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics.--On the chlorids of tungsten, Desray: On the separation of eo- 
balt from nickel, Terreri, 254.--On a new alcohol in which oe is erigenic re- 
placed by silicon, FatzpeL and Crarts, 255.—On a new class of organi 
taining metals, Bertuevor, 256.—Isomerism, BeRTHELOT, 257.—On a new determin- 
ation of the velocity of sound in different media, Aucust Kunopt, 2 5. --The vapor 
of water not absorbent of much radiant heat, TynpDaLL and FRaNKLAND, 259.—Solar 
spots influenced by solar refraction, 269. 
Mineralogy und Geology.—-Geological explorations in Northern Mexico, by A. ReMonp, 
261.—On Fueuvids in the Coal Formation, by Leo Lesquereux: On the oldest known 
formation of the Dead Sea, we L. Larter, 266.—On the occurrence ened sig po- 
sition of Oil bearing deposits in New South Wales, by Rev. W. B, CLanxe, 267.—Re- 
n Geological and blecata Resources of the Grand Traverse Bee in the Lower 
Peninsula of Michigan, by ALEXANDER WincHELL, A.M.: New mineral localities, by 
usH: On — Cryolite, by G. Hagemann, 268.--Paracolumbite and 
Coccadephilie of C. U. Sugparp, 269.—Celur of a diamond changed by heat: Gies- 
eckite a result of the herter of Eleolite: Apophyllite made by artificial means, 
of the Diamond, E. 8B. pe Cuancourtois: Paragenesis of — 
erite: Analysis of Minerals, by S. B. SrarKLee, 271.-On Anatase at Sil 
L, by Rev. E. B. Eppy + Paltcleven | in Russia: On the oman of the 
implements found in Celtic monuments, Damour: Geological Survey of lowa: uae 
Paleozoic Crustacea and Cirriped, 272.—The Geological Magazine, or Monthly Journal 
of Geology, 273, 
vology.—- William , Beary Heres 8 273 Pgs Bobet Kaye Greville: Dr C. 
Fournier on Crucifers, an —The Genera of Plants, by 
Ricuarp AntTuony Sauispury F.R —Handbook of British Water-weeds or 
Alge, by Dr. Joun Epwarp Gray, F.R.S.: Scolo officinarum in West 
Jr., 281—Icones Histivlogicw, oder Atlas der vergleichenden Gewebelehre ; zweite 
Abtheilung, by A. KG.Li Ker, 283.-The Anatomy and Physivlogy of the Vorticelli- 
dian Parasite of Hydra, by H. James-Clark : The Arctic Annelids, by A. J. Malmgren, 
collections of bones of recent Rattlesnakes, by Wm. A. ANTHONY: Me- 
moires pour servir a |’Histoire Naturelle du Mexico, des Antilles et des Etats-Unis, par 
Henri DE Saussure, 
Astronomy and tdcadg: Die ervations on the Meteors of August last, Hs Davip 
Territory 
in 1783-1785, oak; a eer &c., by Bengamin Apruoar Gouxp, 286. 
