A ■ 



THE 



JOURNAL OF SCIENCE 



EXHIBITING 



A VIEW OF THE PROGRESS OF DISCOVERY 



IN" NATURAL PHILOSOPHY, CHEMISTRY, MINERALOGY, GEOLOGY, BOTANY, 

 ZOOLOGY, COMPARATIVE ANATOMY, PRACTICAL MECHANICS, GEOGRAPHY, 

 NAVIGATION, STATISTICS, ANTIQUITIES, AND THE FINE AND USEFUL ARTS. 



CONDUCTED BY 



DAVID BREWSTER, LL.D. 



P.R.S. LOND. SEC. R.S. EDIN. F. S. S. A. 



CORRESPONDING MEMBER OF THE INSTITUTE OF FRANCE; HONORARY MEMBER OF THE ROYAL 

 "*" IRISH ACADEMY; MEMBER OF THE ROYAL SWEDISH ACADEMY OF SCIENCES; 



AND OF THE ROYAL SOCIETY OF SCIENCES OF DENMARK, &C. &C. 



VOL. VI. 

 NOVEMBER— APRIL. 



JOHN THOMSON, EDINBURGH 

 AND T. CADELL, LONDON. 



M.DCCC.XXVII. 



