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CONTENTS- .. V 



Page, 



XXIL Foucaull's Pendulum Experiment, - - - . 200 



XXIII. Note on Heteronomic IsbtViorphism ; by James D. Dana, 204 



XXIV. Mineralogical Notices. No, III, , - - - - 205 

 XXV* Notice of the Report on the Geology and Topo<];raphy of 



a portion of the Lake Superior Land District, by J. W. Fos- U 



■ ^ 



TEK and J. D. Whitney, .-.*.- 

 XXVL Effects of Lightning during a storm on the first of July, 



222 



1851, at Attleboro', Mass., by Mr. Henry Rice, - - 239 



'J- 



XXVII. On the former Changes of the Alps ; by Sir Roderick 



ImPEY MURCHISON, V.P.R.S., - " - . . ■ ,. 



XXVIII. Observations on the Pendulum Experiment ; by Rev, 



245 



C. S. Lyman, 



251 



XXIX. Miscellaneous Notes from Europe ; by B. Silliman, Jr. : 



1. Present condition of Vesuvius — 2. Grotto del Cane and 

 Lake Agnano. — ^3. Sulphur Lake of the Campagna, near 



Tivoli. — 4. Meteorological Observatory of Mount Vesuvius, 

 5. Light for Illumination obtained from the burning of Hy- 

 drogen, by M. Gillard, 



256-260 



XXX. British Association, Twenty-first Meeting at Ipswich, July 2 : 



1. From the Address of Prof, Airy, the Astronomer Royal, 

 at the opening of the Meeting — 2. On Diamagnetism and 



Magne-Crystallic Action ; by Dr. J. Tyndall. — 3. Report 

 of the Kew Magnetographs ; by Col. Sabine. — 4. On our 

 Ignorance of the general course of the Tides ; by Dr. 

 Whewell. — 5. Observations on Atomic Volumes and Atomic 

 Weights ; by Prof. Dumas. — 6. On a Copying Electric Tel- 

 egraph ; by F. C. Bakewell, - . . . 262-278 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics, — Crystalline form of the Rbombohedral Mctah : On the 

 Equivalent of Magnesiumj by MM. R. F. Marchand and Th. Scheerer, 279. 

 New metal, Donarium, 280.— On Aridiuoi, anew metal, by M. Ullgrem: 

 Alkalies, 281. 



Geology. — Discovery of Fossil Fish in the Cual Formation of New Brunswick, 

 by Dr. C. T. Jackson, 281. — Immense Coal bed: On Fossil Fish'io the Coal 

 rocks of OhiOj by J, W. Foster, 282,— Sulphate and Carbonate of Copper of 

 Bristol, Conn., 283. 



Zoology. — On the Classification of the Crustacea Grapsoidca, by James D. Da5a, 

 283.^Note to the Paper on the Cancroidea, by J, D. Dana : On the Resusci- 

 tation of Frozen Fish, by Prof O. P. Hubbard, 291- 



