i^i 



..^' 



> • , *»• 



REPORT 



OF THE 



SUPERINTENDENT 



OF THE 



GEOLOGICAL SURVEY, 



EXHIBITING THE PROGRESS OP THE WORK. 



JANUARY 1, 1861. 



4 



MADISON: 



E. A. CALKINS & CO., STAT? PRIMERS. 



• 1I6L 



