the late Professor Jameson. 29 
‘same period ; and again, in 1820, other editions of both pro- 
ductions were demanded and produced. In these the Natural 
History mode and arrangement was adopted, and great im- 
provements and additions were made. “ In the spring of 
1818,” said the late Professor Mohs, “I had the pleasure of 
seeing my much respected friend, the celebrated Professor 
Jameson, at Edinburgh, to whom mineralogy has been so 
much indebted, both by his extending the knowledge of it 
in Great Britain, and by his exciting a general interest in 
it in that country where so much has already been done, 
and where it may be expected that in a short time so much 
more will be accomplished. I found him occupied with ideas 
respecting the Natural History ofthe Mineral Kingdom, | 
which were similar to my own; and we soon came to agree 
with one another with regard to its most important points, 
because, in fact, our opinions had in a great measure coin- . 
cided, before being mutually communicated.” 
In 1821, Jameson published a Manual of Minerals and 
Mountain Rocks,—a work of great value, and which was con- 
sidered by all competent judges as the best text-book of its 
time. An edition of fifteen hundred copies was sold in the 
course of afew months. In 1819 he commenced the Edin- 
burgh Philosophical Journal. For the first six years he con- 
ducted it with Sir David Brewster, but since that period he 
has been the sole editor. This work was planned by Brewster 
(now Sir David) and Jameson, at the suggestion of the late Dr 
Neill, and countenanced by Constable. It now extends to 
seventy volumes, and is, we believe, admitted to be the most 
valuable repository of scientific information in Britain for 
the period of its existence. The earlier volumes contain not 
a few contributions from himself; and besides numerous 
original articles from other hands, the Journal comprehends 
translations of memoirs from the French, German, Italian, 
and Swedish languages, with many communications from 
foreign correspondents on all the branches of Natural His- 
tory. It will form one of the most durable monuments of his 
talents and industry. 
Busy as his life was, and while always delivering two 
courses of lectures per annum (a winter and a summer one), 
