Vi CONTENTS. 



NUMBER XII. 



Page. 



Art. XXII. A brief Notice of the Life, Researches, and Discov- 

 eries of Friedrich Wilhelm Bessel ; by Sir J. F. W. Hekschel, 305 

 XX1IL On the Properties of Ozone ; by C. F. Schonbein, - 320 



XXIV. Ancient Sea Margins ; by Robert Chambers, - - 323 



XXV. Glycocoll (Gelatine Sugar) and some of its Products of De- 

 composition ; by Prof. E. N. Horsford, — (concluded,) - 326 



XXVI. Singular Property of Caoutchouc, illustrating the value of 



Latent Heat in giving Elasticity to solid bodies, and the dis- 

 tinct functions in this respect of latent and free or sensible 

 heat; by Prof. Charles G. Page, M.D., - - - 341 



XXVII. Cartography ; by Prof. C. Dewey, M.D., - - - 343 



XXVIII. On the Action of Sulphuretted Hydrogen upon Nitric 

 Acetene ; by T. S. Hunt, 350 



XXIX. Description of a Meteoric Stone which fell in Concord, 

 New Hampshire, in October, 1846; by Prof. B. Silliman, Jr., 353 



XXX. Remarks on the Characters of several species of Tertiary 



Corals from the United States, in reply to Mr. Dana. (Extract- 

 ed from a letter from W. Lonsdale, Esq. to C. Lyell, Esq.) 357 



359 



Observations in reply to Mr. Lonsdale's " Remarks ;" by 

 James D. Dana, - - - - - 



XXXII. Notice of a Water-Spout ; by Elias Loomis, - - 362 



XXXIII. On Certain Laws of Cohesive Attraction ; by James 

 D. Dana, 



XXXIV. Results of the Examination of several Waters from Hart- 



364 



ford, Conn. ; by B. W. Bull, - 



XXXV. On the Production of Light by Heat; by Prof. John 



William Draper, M.D., 



XXXVI. On the Changes which Albuminous Substances undergo 

 in the Stomach, during the process of Digestion ; by Prof. 

 Mulder, of Utrecht. (Translated from the Dutch, by Dr. 

 Aug. Volcker.) 



385 



388 



402 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics. — On the Atomic Volume of some Isomorphous Oxyds of 

 the regular system, by Chas. Gerhardt, 405. — On the Acid contained in the 

 North American Coiumbite, by Henry Rose, 408. — Diamond converted to 

 coke : On Different Properties of the Various Rays of the Solar Radiation on 

 the Daguerreotype Plate prepared with Iodine, Chlorine and Bromine, in pro- 

 ducing and preventing the Fixation of Mercurial Vapor; by A. Claidit, 409. 

 Report on the Influence of Light on the Growth of Plants, by R. Hunt, 410. 

 On lhts Application of Photography to copying Microscopic Observations, by 

 Dr. Carpenter: On the Quantity of Electrolysis as affected by the Extent of 

 the sectional area of the Electrolyte, by W. R. Grove, Esq., 411. — On a new 

 theory of the Polarization of Light, by Prof Challis, 412. — Observations on 

 the general Nature and Laws of Electrical Attraction, by Sir W. S. Harris, 413. 



Mineralogy and Geology. — On an Amorphous Boracite, by Dr. M. Karsten : On 

 Sulphato-Chlorid of Copper, anew Mineral, by Prof. Connell, 415. — On the 

 Geological Structure of Barbadoes, and on the Fossil Infusoria, described by 

 Prof. Ehrenberg, from the Tertiary Marls of that Island, by Sir R. H. Schom- 



