

THE 



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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. 



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



HONORARY MEMBER OF THE ROYAL IRISH ACADEMY ; MEMBER OF THE ROYAL SWEDISH 

 ACADEMY OF SCIENCES; AND OF THE ROYAL SOCIETY OF SCIENOES OF DENMARK, 4tC. &C. 



VOL. IV. 

 NOVEMBER—APRIL. 



WILLIAM BLACKWOOD, EDINBURGH 

 AND T. CADELL, LONDON. 



M.DCCC.XXVI. 



