the late Professor Jameson. — \ 
mineralogy and the history of that science in our own 
country. 
“ Well may a man in the evening of his life experience 
some satisfaction, if, like Jameson, he is able to look to a 
long uninterrupted period—by his intellectual activity a period 
amply filled up by his own labours and works which pro- 
moted and advanced science—by the establishment of a 
learned society (Wernerian) that the country derived so 
much good from—and by the founding of a journal of inde- 
pendent character, which has been a great boon to the country 
for more than 35 years. 
“‘ We are happy on our part to express, in the name of the 
Academy, the high position which Jameson held for his 
brilliant services to his sovereign and country. 
“A. BAUMGARTNER. 
A. SCHROTTER, 
General Secretary of the Imperial Academy.” 
“ Vienna, May 3d, 1854.” 
From these letters, and many others, we find that Jame- 
son’s reputation early in life depended in a great measure 
on his mineralogical and geological knowledge. 
At the commencement of his career he devoted much time 
and close investigation to the structure of rocks, and would 
have worked out many useful results had he continued, be- 
cause it is undoubtedly true that a close investigation of 
structure will lead us to the laws, from the operation of 
which the harmony pervading nature results. The old 
school of geology was too much inclined to ascribe the 
varieties of structure to increased or diminished pressure ; 
but there appears to be in nature causes independent of va- 
riations in pressure—the cause of these changes still puzzle 
and perplex the best of our geologists. Studer and Keilhau 
tell us that chemistry fails to account for them. We hope 
soon to see truly valuable results, derived from the micro- 
scopical examination of rocks. If the beautiful experiments 
of Kbelmen had been known when the battle of the Hutton- 
ians and Werperians was at its height, they would have been 
highly prized, as they would have settled the keenly con- 
tested question as to how apparent infusible substances could 
