XVI KOTES BY THE EDITOR. 



of coal and the mechanical appliances which inventors have 

 created, can do more work, or produce more wealth in a day than 

 a thousand could without these aids. 



We present the readers of the Annual of Scientific Dis- 

 covery for 1869, with a fine portrait of James D. Dana, LL. D., 

 Professor of Natural History and Geology in Yale College. 

 Prof. Dana is one of the most distinguished mineralogists living, 

 and is equally eminent as a geologist and zoologist. His works 

 are regarded as standard authority both in this country and in. 

 Europe. 



