CONTENTS 



OF THE 



EDINBURGH JOURNAL OF SCIENCE. 

 No. XIX. 



Page 

 AlkT. I. Biographical Account of Alexander Wilson, M. D. late Profes- 

 sor of Practical Astronomy in Glasgow. By the late Patrick 

 Wilson, A. M. Professor of Practical Astronomy in the University 

 of Glasgow, ... - - 1 



II. On the Mean Temperature of Bombay, deduced from Observations 

 made in 1827, &c. Communicated by Alexander Adie, Esq. 

 F. R.S. E. &c. - - - - - 17 



in. Table of the Variations of the Magnetic Needle at Boston, Falmouth, 

 and Penobscot, in North America, during 128 years. By S. De 

 Witt, Surveyor-General, - - - - 22 



IV. Account of the Quartz Crystals and the Siliceous Paste found in i\\e 



Marble of Carrara, as described by M. Repetti, - - 24 



V. Facts and Observations relative to the recent formation of Quartz Cry- 

 stals, &c. and of indurated Calcedony from Siliceous Solutions and 

 Pastes, - - ' - - - - 28 



VI. On a remarkable Formation of Clouds. By George Harvey, Esq. 

 F. R. S. Lond. and Edin. F. L. S. Honorary Member of the Society 

 for promoting the Useful Arts of Scotland, Member of the Royal Geo- 

 logical Society of Cornwall, &c. &c. Communicated by the Author, 33 

 VII. Account of the Steam-Engines in Cornwall. By W. J. IIenwood, 



Esq. F. G. S., &c. &c. Communicated by the Author, - 34 



VIII. On the Electrical Properties of the Tourmaline. By M. BECauEREL. 50 

 IX. Account of an Ancient Vessel recently found under the old Bed of 

 the river Bother in Kent, and containing the bones of men and ani- 

 mals. In a Letter from William M'Pherson Rice, Esq. F. S. A. 

 late of the College of Naval Architecture at Portsmouth, addressed to 

 Henry Ellis, Esq. F. R. S. Secretary, - - - 56 



X. On the Expansion of Vapour. By Richard Tregaskis, Esq. of 



Perran, near Truro. Communicated by the Author, - 68 



XI. Theorem for computing the Elastic Force of Vapour. By Richard 



Tregaskis, Esq. in a Letter to the Editor, - - 72 



XII. Abstract of a Meteorological Journal kept at Funchal, in the island 

 of Madeira, from January 1st to December 31st, 1827. By C. 

 HeinEken, M.D. Communicated by the Author, - - 73 



XIII. Account of Two Thunder Storms which happened iu Worcestershire, 



