CONTENTS OF VOLUME XXXVII. 
NUMBER CIX. 
Aarl. Theory of Earthquakes; by Professor ALexts Perrey, 
H. The Classification of Animals based on the principle of Ceph- 
alization; by James D, Dana.—No. II. Classification of 
nsects, . eee : Safe ‘ 
HI. On Fossil Insects from the Carboniferous formation in Illinois ; 
by James D, Dana, : - - - * : - 
IV. The Density, Rotation and Relative Age of the Planets; by 
Prof. Gustavus Hinricus, lowa State University, - = 
V. Researches on the Platinum metals; by Wotcott Grzss, M.D., 
VI. Tubularia Not Parthenogenous ; by Prof. Henry James Cuarx, 
VI. Contributions from the Sheffield Laboratory of Yale College. 
—No. VI.—On Tephroite ; by Geo. J. Brusn, : : 
VU. Crystallographic Examination of the Acid Tartrates of Casia 
and Rubidia ; by Jostan P, Cooke, Jr., + . - - 
IX, Geographical Notices, No. XIX.—Speke and Grant’s explora- 
tion of the sources of the Nile, 75.—Unger’s scientific re- 
sults of a tour in Greece and the Tonian Islands, 79.— 
Guyot’s Physical Wall-maps of the Continents, 80.—Prof. 
Whitney on the highest mountains of the United States and 
_ Of North America, 81.—Prof. J. D. Whitney’s Survey of 
California—Proposed Maps, $82.— Recent Australian Ex- 
plorations ; Explorations from Adelaide across the Conti- 
nent of Australia; by J. McDovaty Stuart, 84.—Explor- 
ation of the Interior of Australia; by Mr. Lanpsporoven, 
85.—Explorations in the Interior of Australia by the Burke 
Relief Expedition, under Mr. J. M’Kintay, 86.—Dr. Liv- 
_ INGsronz’s recent exploration of the Niassa Lake, 87.—Ex- 
ploration of the River Vermejo, in the Argentine Confedera- 
tion—Mr. Porter C. Buss, 88. 
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10 
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