^^22 NATURAL SCIENCE [February 



out the unity of structure, movement, and relations of the con- 

 tinental masses : thus " he draws the world together link by link." 

 It is impossible to give any adequate idea of this work in a short 

 summary. I feel it almost impettinent for a young geologist like 

 myself to praise it ; I can only recommend others to read it. 

 "^ J. W. Gregoky. 



