CONTENTS. 



vii 



Page. 



XXXIV. Description of an Isopod Crustacean from the Antarctic 

 Seas, with Observations on the New South Shetlands ; by 

 James Eights. — With two plates, 391 



XXXV. Description of a large Bowlder in the Drift of Amherst, 

 Massachusetts, with parallel striae upon four sides ; by Pro- 

 fessor Edward Hitchcock, 397 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics. — On the wave lengths of the most refrangible rays of light in the 

 Interference Spectrum, 400. — On the connection between the theorem of the equiva- 

 lence of heat and work and the relations of permanent gases, 402. — On Ozone : Prepa- 

 ration of Aluminum : On the conversion of carbonic oxyd into formic acid, and on the 

 preparation of formic from oxalic acid, 403. — On the determination of chlorine by titri- 

 tion, 404. — Reduction of aluminum from cryolite : Researches on the Fluorids, 405. — 

 On two new methods of producing Urea artificially : On Acetylamin : The manufac- 

 ture of Malleable Iron and Steel without Fuel, 406. — On some Dichromatic Phenomena 

 among Solutions, and the means of representing them, by Dr. Gladstone, 412. — On 

 several new methods of detecting Strychnia and Brucia, by T. Horsley, 413. 



Geology. — On the Spongeous Origin of the Siliceous Bodies of the Chalk Formation, by 

 J. S. Bowerbank : On some Palaeozoic Star fishes, compared with Living Forms, by 

 J. W. Salter, 415.— On the Physical Structure of the Earth, by Prof. Hennessy, 416. 

 —On the Great Pterygotus (Seraphim) of Scotland, and other Species, by J. W. Salter, 

 417. — On the Bone Beds of the Upper Ludlow Rock, and the base of the Old Red Sand- 

 stone, by Sir R. I. Murchison, 418. — On a Fossil Mammal (Stereognathus ooliticus) 

 from the Stonesfield Slate, by Prof. Owen, 419— -On the Dichodon cuspidatus, from the 

 Upper Eocene of the Isle of Wight and Hordwell, Hants, by Prof. Owen, 420. — On a 

 range of Volcanic Islets to the Southeast of Japan, by A. G. Findlay, 421. — On the 

 New Red Sandstone Formation of Pennsylvania, by Isaac Lea, 422. — Descriptions of 

 New Species of Acephala and Gasteropoda, from the Tertiary formations of Nebraska 

 Territory, with some general remarks on the Geology of the country about the sources 

 of the Missouri River, by F. B. Meek and F. V. Hayden, M.D., 423. 



Botany and Zoology. — Alph. DeCandolle : Geographie Botanique raisonnee, ou Exposition 

 des Faites principaux et des Lois concernant la Distribution Geographique des Plantes 

 de l'Epoque Actuelle, 429.— Origin of the Embryo in Plants, 432.— Bentham, Notes on 

 Loganiaceae, 433.— The Flowers of the Pea-Nut, 435.— Martius, Flora Brasiliensis : L. 

 R. Tulasne, Monographia Monimiacearum, 436.— Chloris Andina, Essai d'une Flore de 

 la Region Alpine des Cordilleres de l'Amerique du Sud, par H. A. Weddell, M.D. : 

 Manual of the Botany of the Northern United States, by Prof. Asa Gray, 437. — Report 

 on the present state of our knowledge of the Mollusca of California, by Rev. P. Car- 

 penter, 438.— On the Vital Powers of the Spongiadse, by Mr. Bowerbank, 439. — 

 Gar-pikes, 440. 



Astronomy. — New Planets, Harmonia, 440. — Daphne : Isis, 441. 



Miscellaneous Intelligence. — American Association for the Advancement of Science, 441. 

 —The Meteor of July 8lh, by W. Spillman, 448.— Sulphuric Acid Barometer : Can- 

 tonite : British Association : American Geological History, 449.— Obituary.— Rev. Dr. 

 Buckland, 449.— Geology of the Pacific and other regions visited by the U. S. Explor- 

 ing Expedition under C. Wilkes, U. S. N., in the years 1838-1842, by James D. Dana: 



