iv CONTENTS. 
NUMBER XCIL 
Arr. [X.—Forest Geography and wenger so ; by A. Gray, 
X.—Structure and Origin of Mountains; by J. LeConrs, - - - 
XI. = obirremee of a Solid Pesnacarbus in the Eruptive 
1 
Page 
cS OO 
: . ea 
XIV.—« tadnrnted Bitumen” in cavities in the trap of the 
Connecticut vailey, from the Report of J. G. Percivat, 130 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics—Underground Temperatures, 132.—Law of Solid 
umes, SCHRODER: Flame Temperatures, Rosetti, 135.—Production of a 
i He 
of Gallium, BoIsBauDRAN, <1 Heo vions, Teenie “from. Manpite: HECHT 
E, 138. 
Geology and Mineralogy.—Geological results of the Polar Expedition under Sir 
George Nares, 139. 2 by serene results of the same, 140.—Geological Sur- 
vey of of platoon 2.—Hruptive copper-bearing rocks of Lake os geese 143. 
—Rock Salt ronine | in Western New York: Wilcox Spouting Water-Well, 
C. A. Naanviene’ 144.—Superficial pe “3 British Columbia. 147.—Geologi- 
cal Survey of Canada, 148.—Foasil Fishes fi oi oe rias a8 ioe ——s and 
ec 
oO; 
amp : American Min ore ra: 152. —Rocks of Oe ori 
4 = hee 153. mee 154.—Crystallization of Silica: Mineralogi 
— of France: — 155. 
Botany w Fern-books, 155.—Ca atalogue of Pheenogamous and 
ses deena Plants, 1 156. —Native pee and Ferns in the United States: 
Zoological hepa and some of its difficulties, ScLaTeR, 157.—Corals of 
the oh ae He 
Meridi : 
162.—Bulletin of the ane Institution: The Speaking Telephone, etc.: The 
cewtnone pe or bidet emery ereeeng oe Society of 
Solar 
of Ju July 29, 164 
jtuary.— Wm. M. Gabb: Baron von Bibra: A. von Ettingshausen, 164. 
NUMBER XCHL 
Page 
rt, XV.—On the Origin of Comets; by H. A Ph he: Ge 165 
dee the Animal of Mille sudan alcicornis ; 5 by W WiLL 
o — 
| istivesiies aula: out ndiaea ania 
ice and Anice W. Pau 
ed 
