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CONTENTS. 
NUMBER CXXII. 
Ant. XVI.—Notice of an Account of Geological Observations 
in China, Japan and Mongolia; by RarpHarL PumPELLy, - 
XVII. The present annual effect of the secular change of the 
Magnetic Declination in the Eastern part of the United 
States, accompgnied by a Chart; by Cuarues A. Scuort, 
XVIII. Observations of Tides at Tahiti, made for the U. S. Coast 
Survey, under the direction of Capt. Jonn Ropcers.—Com- | 
municated by Prof. A. D. Bacue, - - . : - 
XIX. On Prairies; by A. Fenpier, - - - 
XX. A new method of Meteorological comparison, siite three 
illustrative Tables; by Puiny Earte Cuase, - 
XXI. On Cephalization; No. IV :*Explanations dentin out = ihe 
Statements of an Objector; by James D. Dana, - 
XXII. Discovery of Fossil Footmarks in the Liassic @) oy 
tion in Kansas; by B. F. Mupce, - 
XXIII.—Note on the Geology of Piesheuie in Canada West 
by Prof. A. WINncHELL, - - - - 
XXIV. On the Aqueous Lines of fig Solar Spectum by 
Josiau P. Cooxeg, Jr., 
XXV. The Distribution and Mi eration of North Aaieesial Birds; ; 
by Spencer F. Bairp, - - 
XXVI. The relative numbers of Shooting Stars seen in a given 
period by different numbers of observers ; by H. A. Newron, 
XXVII. On Molecular Physics; by Prof. W. A. Norton, . - 
XXVIII. Analyses of Rahtite, Marcylite and Moronolite; by 
gS. W. es with remarks by Professor Cuartes U. 
Sugparp, - . “ * . 
XXIX. Note on ihe Mechanical mieroens of Ligh by wae 
G, Farmer, - 
XXX. On Slintenine: 48 at ie: Sith pot Lai Mine, Massa- 
chusetts, and Uwarowite at Wood’s Chrome Jas. a 
Penn.; by Caartes Upoam Sueparp, - - 
XXXI. On Sodium Amalgamation ; in a letter from oe : 
Wurtz to Professor B. Sintiman, - - - 
_XKXIL On Covicography by Prof. Dawer, => + 208 
- 
XXXII. Whitney’s Geology of California, 
p.4 
XXKV. Scie ce the Distribution of North Ameri eer 
AE. VeRninn, ee ee 7 
