CONTENTS 



Of THE 



EDINBURGH JOURNAL OF SCIENCE. 



No. IV. 



Page 



Art. I. On the Mechanical Effects produced when a Conducting Liquid is 

 electrified in contact with Mercury. In a Letter from J. F. W. Her- 

 schee, Esq. Sec. R. S. Lond. F. R. S. Edin. &c. &C. to Dr Baiw- 

 ster, ....... 193 



II. Analysis of a Peach-Blossom Coloured Mica, from Chursdorf, near Penig, 

 in Saxony. By C. G. Gmelin, Professor of Chemistry in the University 



of Tubingen. Communicated by the Author, - - - ID!) 



III. Observations on the Optical Structure of Lithion-Mica, analysed by Pro- 

 fessor Guelix. By David Brewster, LL. D. F. R. S. Lond., and 

 Sec. R. S. Edin. - - - - . . 205 



IV. Description of a Boat with a Revolving Paddle Scull, Invented by An- 

 drew Waddell, Esq. F. R. S. E. Communicated by the Author, 20G 



V. On the Dispersion of Stony Fragments remote from their Native Beds, as 

 displayed in a Stratum of Loam near Manchester. By Samuel Hih- 

 bert, M. D. F. R. S. E., and Secretary to the Society of Scottish Anti- 

 quaries. Communicated by the Author, ... 20f! 



VI. Table of Tides kept at the Mouth of Macquarrie Harbour, in Van Die- 

 men's Land, between July 21st, and September 27th, 1822. Communi- 

 cated by his Excellency Sir Thomas Brisbane, K. C. B. F. R. S. L. 



cSc E. &c. £13 



VII. Researches on Hydrocyanic Acid and Opium, in reference to their Coun- 

 ter-Poisons. By John Murray, F. L. S. M. W. S. &c. Communi- 

 cated by the Author, - - - - - 214 



VIII. Description of VI ithamite, a New Mineral Species found in Glenco. By 

 David Brewster, LL. D. F. R. S. Lond. and Sec. R. S. Ed. 218 



IX. On the Gecus Hookeria of Smith, of the order Musci. By \V. J. 

 Hooker, LL. D. F. R. S. &c. &c. Regius Professor of Botany in the 

 University of Glasgow ; and R. K. Greville, LL. D. F. R. S. E. &c. 

 &c. Communicated by the Authors, ... 221 



X. On the Distribution of Granite and of Trap in different Parts of Scotland. 

 By John MacCuli.ocii, M. D. F. R. S. F. L. S. and M. G. S. Chemist 

 to the Board of Ordnance, and Professor of Chemistry in Addiscombc 

 College. Communicated by the Author, ... 236 



