Miscellaneous Intelligence. ' 239 
aspian Sea, an eyond to the borders of China, a journ 
which first made known the mineralogical resources of the exten- 
sive Russian E His researches on his native soil were con- 
ion of minerals, and their artificial forma He was the great 
master in the art of crystallographic drawing. The science of the 
association of minerals in rocks, petrography, nated with 
tocks by means of thin microscopic sections mounted on glass 
slides, in which minerals invisible to the unaided eye are dis- 
d. 
but all the physical wh of the spe- 
nD 
yet offered unsolved problems. In his anxiety that his work 
should not. be lost to science, only twenty-four hou 
death he dictated to his son the results of his latest researches. 
; . - ? . 
ing his aim. His life, in thought and action, reflected Bacon's 
maxim “Pertransibunt multi, sed augebitur scientia. He was 
