INDEX TO PERIODICAL PUBLICATIONS. 189 



Report of the Commissioners of the Land Office, Washington, D. C., 177 



Report of the National Academy of Sciences, 154 



ROYAL IRISH ACADEMY, DUBLIN,..., 155 



ROYAL MICROSCOPICAL SOCIETY, LONDON, 155 



Sachsische Bergwerks Zeitung, A 174 



Schweiger's Journal fur Chemie und Physik, (Journal fiir Cheniie und 



Physik,) 168 



Scientific American, 174 



Silliman's Journal, (American Journal of Science and Art,) 158 



Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. See 



KAISERLICHEN AKADEMIE DER WISSENSCHAFTEN, 152 



Sitzungsberichte der mathematisch-physikalischen Classe der Koniglich 

 Bayerischen Akademie der Wissenschaften, (KONIGLICH BAYERIS- 



CHEN AKADEMIE DER WISSENSCHAFTEN,) 153 



SMITHSONIAN INSTITUTION, WASHINGTON, D. C., 155 



SOCIETE CHIMIQUE DE PARIS, 155 



SOCIETE DE PHARMACIE DE PARIS, 155 



SOCIETE DE L'INDUSTRIE MINERALS, PARIS, 155 



SOCIETY GEOLOGIQUE DE FRANCE, PARIS, 156 



SOCIETE INDUSTRIELLE DE MULHOUSE, 156 



SOCIETY FOR THE DIFFUSION OF USEFUL KNOWLEDGE, LON- 

 DON, 156 



Statistical Annual, (The,) 175 



STATE ENGINEER AND SURVEYOR (THE) OF NEW- YORK, 180 



STATE MINERALOGIST (THE) OF NEVADA, 180 



SURVEYOR GENERAL, (THE) OF NEVADA, 180 



Technologist, (The,) (Industrial Monthly,) 175 



Thompson's Annals of Philosophy, (Annals of Philosophy.) 161 



Tilloch's Philosophical Magazine and Journal of Science, (London, 



Dublin and Edinburgh Philosophical Magazine and Journal of Science,) 169 

 Transactions of the Academy of Science, St. Louis, (ACADEMY OF 



SCIENCE OF ST. LOUIS,) 147 



Transactions of the Agricultural Societies of the State of Massachusetts, . . 147 



Transactions of the Agricultural Society of the State of Wisconsin, 148 



Transactions of the Albany Institute, 148 



Transactions of the American Institute, 148 



Transactions of the American Institute of Mining Engineers, 148 



Transactions of the Edinburgh Geological Society, 151 



Transactions of the Institution of Civil Engineers, London, 152 



Transactions of the New- York State Agricultural Society, 154 



Transactions of the Royal Irish Academy, Dublin, 155 



UNITED STATES PATENT OFFICE, 178 



United States Rail-Road and Mining Register, 175 



UNITED STATES SIGNAL OFFICE, WASHINGTON, D. C., 178 



UNIVERSITES DE BELGIQUE, BRUXELLES, 156 



UNIVERSITY OF THE STATE OF NEW- YORK, 156 



Van Nostrand's Eclectic Engineering Magazine, 175 



Verhandlungen der K. K. Geologisch Reichsanstalt, 153 



VEREIN DEUTSCHER INGENIEURE, BERLIN, 156 



Wagner's Jahresbericht. See Jahresbericht iiber die Leistungen, &c., 167 



