NUMBER CXLTII. 



Art. XXXIV. — Remarks concerning the 

 America; by Asa 

 ~ Notes on PI 

 Union of Spectral 1 



XXXVI.— New views of Mr. G. II. Darwin's Theory of the 

 Evolution of the Earth-Moon System ; by S. Haughton, 



XXXVII.— Recent discoveries in the Krian (Devonian) Flora 

 of the United States ; bv J. W. Dawson, 



XXXVIII.— Trias*!,- Trap I'focks of Massachusetts, Connect- 

 icut and New Jersey ; by W. M. Davis, : 



XXXIX.— The Deerfield Dyke and its Minerals ; by B. K. 

 Emerson, 



XL. — Notice of the remarkable Marine Fauna occupying the 

 outer banks off the Southern Coast of New England, 

 No. 1 ; and of some additions to the Fauna of Vineyard 

 Sound; by A. E. Vkrrill, i 



XLI.— North American Minerals; by W. E. Hidden, : 



XUr.-Mar.it,, of the Cerro de Mercado, or Iron .Mountain. 

 of Durango, Mexico, and certain Iron Ores of Sinaloa ; 

 by B. Silliman, - - ! 



XLIII._The Thomson Kileet ; bv .To IIN Trowbridge and 



SCIENTIFIC INTELLIGENCE. 

 Chemistry and Physics.— Carbon dioxide of the Atmosphere, Reiset, 387.- 

 ic Rotatory Polai 



■. - ■. . ., . - ! . ■, ■ 



II. L'reece. 304.— Si 



J- P. FlXLAY. « B II SH,408. " 



