daylight, and other Phenomena of Photography, by M. Claudet : On the In- 

 fluence of Light in preventing Chemical Action, by Mr. R. Hunt, 272. — An 

 Examination of Berkeley's Theory of Vision, by Sir D. Brewster, 27:*. — On 

 the Peculiar Cooling Effects of Hydrogen and its Compounds in Cases of Voltaic 

 Ignition, by VV. R. Grove, Esq.,' 274. —Report on Coloring Matters, by Dr. E. 

 ScHUNCK, 275 — On the Alloys of Tungsten with Copper and other Metals, by 

 Dr. Percy: Analysis of Wrought Iron produced by Cementation from Cast 

 Iron, by Prof. Miller : Gutta Percha, 276.— Report on the Air and Water of 

 Towns, by Dr. Smith, 279.— On the Manufacture of Ice, 2d0.— Composition of 

 the Tungstates, by A. Laurent, 281. — On the Crystallization of Sulphur, by 

 M. S. Pasteur and M. Ch. Deville, 282. 



Mineralogy and Geology. — Examination of the Telluret of Bismuth, from Virginia, 

 by Coleman Fisher, Jr., 282. — Emery Formation of Asia Minor, by J. Law- 

 rence Smith, 2S3.— Chrome and Meerschaum of Asia Minor, by J. Lawre.ncb 

 Smith, 285. — Axinite in Maine: Copper of the Lake Superior Region, 286, — 

 Observations on the " Old Crater" adjoining Kilauea, (Hawaii,) on the east, by 

 Rev. C. S. Lyman, 287. 



Zoology.— On the Boring of Mollusea into Rocks and on the removal of Portions 

 of their Shells, by Mr. A. Hajvcock, 2S8. 



Astronomy.— Denial of the Discovery of the tenth asteroid, Diana : Ecliptic Star 

 Charts, 290. 



Miscellaneous Intelligence. — Observations on California, by Rev. C. S. Lyman, 2! . 

 Analysis of Ashes, from a letter from ^f r. Fleitmann to Prof. Horsford, 292. 

 Xurora Borealis of Nov. 17, 1848, 293— Gold Mining in Virginia, 295.-0(1 

 Common Salt as a Poison to Plants, by VV. B. Randall M».— On the Influ- 

 ence of Temperature upon the Distribution of Fauna in the JEgem Sea, by 

 Lieut 

 from 



Scientific School at Cambridge : Daguerrotyp 



Orang Otang, 303. — Climate of Italy : Goitre dJPlo M nesian Salts in vvatc 

 Motive power : Coal in the Straits of Magellan : Gun Cotton for tooth ache. 304. 

 Native Silver in Norway: Naphtha Spring near Alfreton, England: Prizes 

 Chloroform, as a solvent, 305. — Appendix — Observation! on < iifornia, from 

 the correspondence of the Rev. C. S. Lvma.v, 305. 



Bibliography. — Alph. De Candolle, Prodromus Reg. Veg. : pars. XII, Sistens 

 Labiates et quinqtie minor* s Coroiliflorarum ordinos, 309.— Annals of tho Ly- 

 ceum of Natural History of New York, 311. 



List of Works, 311. 



pe 



co 



ERRATA. 



Page 114, line 2 from top, for Marbury, read Marburg. 

 *~- i i, line 29, &c, Southern edge of bow is, shou! 



Id connect directly with 



Leanis 



— <>* «inu at pi jueoms. 



r. 153, line 20 from bottom, for porphyry, read basalt 



