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 ence of xUercury in the Tyrol, by M. H. Rose: Mud of the Nile, 275. 



Zoology. — Conspectus Crustaceorum quae in Orbis Terrarum Circumnavigatione 

 Carolo Wilkes e Classe Reipublicae Fcederatas Duce, lexit et descripsit Jacobus 

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Miscellaneous Intelligence. — On Certain Frozen Leaves, by J. Gorgas, 286. On 



the Mechanism and Functions of the Organs of Voice in Man ; with the intro- 

 duction of a case of double utterance, by Dr. Pettigrew, JS7. — The Aneroid 



■Barometer J 



Gold at Port Phillip, South shore of Australia, 200 —The Tin 

 Mines of Banca, 891 , — Navigation of the Arctic Regions: Type Manufacture, 

 992. — New Mode of copying Engravings, by M. Niepce : Herbaria of New 

 England Plants, 293.— British Museum : Platinum and Diamonds in Califor- 

 ni Medal to \V. Lassell, 294.— Obituary. —George W. Whistler, 294— Ste- 

 phen Endiicher, 299. 



Bibliography -De Candolle's Prodromus Regni Vegetabilis : Pars XHI, Sectio 

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 vicinity of Cincinnati, Ohio, during the years 1834-1844, by Thomas G. Lea, 

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 James Hewetson Wilson, F.L.S., &-c« : A Manual of Botany; being an 

 Introduction to the Study of the Structure, Physiology, and Classification of 

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 U.S.N. ,303. — Introduction to Meteorology, by David Purdie Thomson, M.D.: 

 A Memoir on the Geological Action of the Tidal and other Currents of the 



Ocean, by Charles Henry Davis, A.M. Lieut. U.S.N , 305.— Sixty-second 

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 and Financial Condition, up to January I, 1849: A ( ciion of Tables and 

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 I>avi i Manual of Mago by Daniel Davis. Jr.: Knapp's Chemical 



Technology, 3s -The Nautical Slid* Rule, bj Fail Camkro* : nd 



Report of Experiments on Gunpowder, made at Washington Arsenal in 1845, 

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Literature, 309. 



List of W ■-. .. 310. 



Appexdi .—American A iation for the Advancement of Science, 311. 



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