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Encyclopaedia Britannica, and to the Transactions of the Wernerian 

 Society, of which he was the founder. In 1819, in conjunction 

 with Dr., now Sir David Brewster, he commenced the Edinburgh 

 Philosophical Journal, which was afterwards continued, under his 

 sole editorship, under the title of the Edinburgh New Philosophical 

 Journal, and this duty he continued steadfastly to perform to the 

 end of his life. 



Mr. Jameson's strong point was Mineralogy ; and as he held a 

 knowledge of minerals to be valuable chiefly as subservient to prac- 

 tical geology and mining, he paid less regard to chemical than to 

 external characters in the definition and determination of mineral 

 species. His consummate acquaintance with the mineral characters 

 of rocks stood him in good stead in the great controversy of which 

 Edinburgh became the centre, between the respective supporters of 

 the Plutonian and Neptunian theories of the earth. Trained in the 

 school of Werner, and deeply reverencing his great master, Mr. 

 Jameson naturally imbibed his views ; and though he eventually 

 became convinced of their insufficiency, and candidly avowed his 

 change of opinion, it is admitted that the doctrine which finally 

 triumphed gained much in solidity and precision by the searching 

 ordeal to which it had been subjected at the hands of its accom- 

 plished opponent. 



His College lectures owed no attraction to language or delivery, 

 but the solid instruction imparted secured the earnest attention of 

 his audience. His success as a teacher, however, was greatly due 

 to his field lectures and geological excursions with his pupils in the 

 country round Edinburgh, so rich in visible illustrations of geolo- 

 gical science. These practical outdoor instructions, conveyed as 

 they were in perspicuous and impressive language, and followed 

 up by easy and unrestrained colloquial explanation, became the 

 means of infusing a love for the study in many of his youthful fol- 

 lowers, and of sending forth active and well-prepared geological 

 labourers to most parts of the world. 



Mr. Jameson was a member of many learned societies both at 

 home and abroad ; he was elected a Fellow of the Royal Society in 

 1826. In private life he was much esteemed and could reckon 

 many attached friends. His death took place on the 19th of April 

 1854. 



