106 



fessors B. Silliman and B. Sillinian .Tun., and James D. Dana, 



for July and Sept. — By the Editors. 

 Memoires de la Societe Physique at d'Histoire Naturelle de Geneve. 



Tome XI., P"«- 1. — By the Society. 

 The Journal of the Royal Geographical Society of London. Vol. 



XVI., Part 1. — By the Society. 

 The Quarterly Journal of the Geological Society. Nos. 7 and 8. 



Edited by the Vice Secretary. — By the Society. 

 Astronomische Nachrichten, Nos. 539 to 559. — By Professor 



Schumacher. 

 Report to the Principal Secretai'y of State for the Home Depart- 

 ment on the Royal Observatox-y of Edinburgh. — By Professor 



Smyth. 

 Scheikundige Onderzoekingen gedaan in het Laboratorium der 



Utrechtsche Hoogeschool. Deal III., Stuk. 5, — By the 



Editors. 

 Memoirs and Proceedings of the Chemical Society. Part. 19. — 



By the Society. 

 Annuaire Magnetique et Meteorologique du Corps des Ingenieurs 



das Mines de Russie. Par A. F. Kupffer, 1843. Nos. 1 



and 2. — By the Author. 

 Report of the Astronomer-Royal, Greenwich, to the Board of Visi- 

 tors, 1846. — By the Author. 

 Biographical Sketch of the late Robert Graham, M.D., Professor of 



Botany in the University of Edinburgh. By Charles Rans- 



ford, M.D. — By the Author. 

 Correspondence of the late James Watt on his Discovery of the 



Theory of the Composition of Water. Edited by J. P. Muir- 



head, Esq. — By the Editor. 

 Astronomical Observations made at the Royal Observatory, Green- 

 wich, in the year 1844, under the direction of George Biddell 



Airy, Esq. M.A., Astronomer-Royal. — By the Boyal Society. 

 Bericht uber die zur Bekanntmachung geeigneten Verhandlungen 



der Konigl. Preuss. Akademie der Wissenschaften zu Berlin. 



Juli 1845 bis Juni 1846. 

 Abhandlungen der Koniglichen Akadernie der Wissenschaften zu 



Berlin, 1844. — By the Academy. 

 On the superficial Detritus of Sweden, and on the probable causes 



which have affected the surface of the Rocks in the Central 



