" CONTENTS. , 



Page 

 in which it appeared the Electrical Discharge passed from the Earth 

 towards the Clouds. By John Williams, Esq. Communicated 

 by the Author, - - - - - 81 



XIV. On the Parasitic Formation of Mineral Species, depending upon Gra- 

 dual Changes which take place in the Interior of Minerals, while 

 their External Form remains the same. By William Haidinger, 

 Esq. F. R. S. Edin. - - - - - 86 



XV, Observations and Experiments tending to demonstrate that the Gra- 

 nules which are discharged in the explosion of a grain of Pollen, in- 

 stead of being analogous to spermatic Animalcules, are not even or- 

 ganized Bodies. By M. Raspail, - - - 96 



XVI. Note on Mr Brown's Microscopical Observations on the active Mole- 



cules of organic and inorganic bodies. By M. Raspail, • 106 



XVII. Physical Notes on the Bay of Naples. Communicated by the Author 

 No. ir. — Account of the Buried Cities of Herculaneum, Pompeii, 



and Stabiae. 108 



XVIII. Notice of the Performance of Steam- Engines in Cornwall for June, 

 July, August, and September 1828. Communicated by W.J. Hev- 

 wooD, Esq. F. G. S. - - - - 137 



XIX. Abstract of a Meteorological Register kept at Rampoor and Kotgurh, 

 in January, February, and March 1822. By Captain Patrick 

 Gerard, of the Bengal Native Infantry. Communicated by the 

 Author, - - - - - - 139 



XX. Account of the Rain which fell at Bo)p[ibay in June, July, August, 

 September, and October, from 1^17 to 1827. Communicated by 

 Alexander Adie, Esq. F. R. S. Edin. - - - 141 



, XXI. Experiments on the penetration of Water into Bottles immersed to a 

 great depth in the sea, made in a Voyage from India to England. 

 By Charles H. Weston, Esq. In a Letter to the Editor, - 144 

 XXII. On a splendid Luminous Arch seen at Plymouth, Sept. 29, 1828. 

 By George Harvey, Esq. F. R. S. Lond. and Edin. F. L, S., 

 F". G. S., &c. &c. Communicated by the Author, - - 146 



XXIII. On an interesting Meteorological Phenomenon. By George Har- 

 vey, Esq. F. R. S. Lond. and Edin. Member of the Royal Geologi- 

 cal Society of Cornwall, &c. &c. Communicated by the Author, 148 



XXIV. Description of Nontronite, a new Mineral discovered in the Depart- 

 ment of the Dordogne. By M. P. Berthier, - - li^O 



XXV. Account of two remarkable Cases of Insensibility in the Eye to parti- 

 cular Colours, - '- - - - 153 

 XXVI. Farther Remarks on Self-Registering Thermometers. Communicated 



by the Author, - - - - - 159 



^XVII. Account of Two remarkable Rainbows, one of which inclosed the 

 Phenomenon of converging Solar Beams. By David Brewster, 

 LL. D., F. R. S. Lond. and Edin. - - - 163 



XXVIII. ANA.LYSIS OF SCIENTIFIC BOOKS AND MEMOIRS, 1C4 



Elements of Natural History, adapted to the present state of the 

 Science, containing the generic characters of nearly the whole Ani- 

 mal Kingdom, and descriptions of the principal species. By John 

 Stark, F. R. S. E. Member of the Wernerian Natural History 

 pocicty of Edinburgh, &c. - - - ib. 



