CONTENTS. Vv 
NUMBER CLIIL. 
Art, XITX.—Existence in chai chars 59 of a Dry Zone, 
om ase by A Growers Se ce a Fee 161 
- eee ee SSeS awash ec ee he eae eis - 167 
XXI. Analyses of two varieties of Lithiophilite; by S. L. 
PENPIBEE SEOs eo as eb la patie Gowen 176 
XXIL Be of Sound.—I. The Energy and — 
of Damping of a Tuning Fork; by C. K. Wrap, --..-- 177 
XXIIT.—The as of Rocks geologically medeasdare by 
RE ae re a 190 
XXIV, —Mr. Giasebrook’ Paper on the Aberration of Con- 
ave Gratings; by H. A. Rownann,.- 2.2.22... 222 214 
XXV. —Stibnite ori Japan; by . S. Dan MAS st ee ey 214 
XXVI.—Voleanoes of Northern California, Oregon and 
‘Washington Territory ; by A. Hacue and J. P. Ippines, 222 
XXVII —Cassiterite, Spodumene and Beryl in the Bla ck 
ore Dakota; W. Fr. BieRe oka roel 235 
SCIENTIFIC INTELLIGENCE. 
rey and tae Pd pe nae of Prout, GERBER, 236.—Modified form of 
V. Meyer's Vapor d a. enki. Scuwarz: New Tellurium oxide, and 
on a new reaction of Tellurium, Divers and Sarmosk, 237.—Production of Sul- 
phides by pressure, SPRING, 238. anoubie Orthophosphates of Barium, DEScuuL- 
TEN: Saponin, Stir 39.—New organic acid in the juice of the Beet Root, 
Von LippMann, 240.—Silicie Ethers of the Phenols, Martini and WEBER, 241. 
Geology and Mineralogy.—Exploration of parts of bh ps2 Idaho and Monta 
SHERIDAN, GREGORY and ee 241.—Thermal Springs of the Talento 
woe frie by A. C. 2.—Cause of the iroreg "Period, by 8. V. 
—Deep-sea taceon ‘atone Nodules, 2 
ines and Zoology.—Genera Plantarum ad Exemplaria imprimis in herbariis 
Kewensibus servata definita, BENTHAM and Hooker, 245.—Itinera Principum 
S. Coburgi: Notice beeches sur i. Joseph Decaisne, par owas Bor- 
NET, 247. 
Miscella entific Intelligence. ery exits 0 Meteorite : amet delivered to . 
the Saline of the Baltimore and Ohio a a ageeicon : The Iroquois Book 
of Rites, H. HALE: American yl ation, 
