vi CONTENTS. 
SCIENTIFIC INTELLIGENCE. 
casa —The formation of Mountains and the Secular Cooling of the Earth, Dar 
IN, 320.—Binaural Audition, comes gomy 322.—The lage Lecture pefore 
the Fellows of the London Chemical Society, A. Wurtz, 323.—Experimental 
nation of the velocity of Light, A. A. MICHELSON, 324. 
Shae Sad Mineralogy.—Note on Mountain-making by the Contraction of the 
a 
d 
e 33 
Geological Survey of Ohio, 331.—Journal of a Tour in Marocco and the Great — 
tlas, J. D. Hooker and J. Batt: Annual Report of the Siegen Geologist of New 
Jersey, for reed Geological ovord for 1876, 332 —The Study of Rocks, F. 
Rotier: Ui die Zusammensetzung der Hithicn gilboer: mes 
tali 
e HER 
The oompoeition of Spodumene and Petalite, 0. D@LTER: Cacoxenite from Lake | 
Superior, E. CLaassen, 333.—A emcage Srpaaiie, M. Damour: Thee 
e system of Pyrostilpnite, STRENG: eritansanmling rhe Univer- — 
sitat Gottingen, C. hee : Enstatite rock fe South Africa 
Botany and Zoology.— Polpembevons, true and Pei ae - seis to Partheno- — 
genesis, 334.—Notes on Euphorbiaces, G. BENTHAM —Journal of a Tour 
in Marocco and the Great samen ae ue rage ER and Aa LL: scares Ferns of 
~ seat America, 338. Bor. Exsiccatze, Fartow, ANDERSON 
: The Black Mildew of Walls, Lury, 339.—T wo Bermuda dice mistak- 
sag danstibed as new, A. GUNTHER: Ala ska Chitons ei Limpets, DALL, kee 
evan eB. Scientific Trielligence. _The discove ery Se miner eral wax, Ozoce 
NEWBERRY, 340.—The American Antiquarian: Wanderings in south : 
America, the Northwest is the United States and the An a meas ke WATERTON, 
341.—A Real T elegraph: The Soren et mies and phy! 1 ee a of 
Steel Rails, C. B. Duper: ‘The Mete ~~ ogist: The Paleontologist, 3 Obitu- 
ary.—Professor Gunes Leonhard, 3 
NUMBER CL 
P 
Arr. XLL fickery; by WS. in “See Plants of the 
oe RR 3 
ORTON, 
XLIL.—Mineral Locality in Fairfield County, with the de- 
= a: of two Es new species; by Guorer J. 
Hu and Epw . Dana. Second paper, - - 359 
XIV. —Fox Hills Groep of Colorado; by STEVENSON, 369 
J.J. 
—Spectrum of Brorsen’s Comet; by C. A. Youn 373 
} n 
XLVIi—Explorations in the Wappinger Valley Limestaue 
of Dutchess County, New York; by W. B. Dw hele . 389 
me IL. ne on the Planet discovered March 2 
a ee ae 
pte ae iad 
