AMERICAN JOURNAL 



SCIENCE AND ARTS. 



Professors JAMES D. DANA and R. STLIJMAN. 



Professors ASA GKAV am. WOTAOTT GIBBS, 

 OF CAMBRIDGE, 



Professors H. A. NEWTON, S. W. JOHNSON, 



GEO. J. BRUSH AND A. E. VERRILL, 



OF NEW HAVEN. 



THIRD SERIES. 



VOL. I -[WHOLE NUMBEK, ( L 



Nos. 1-6. 



JANUARY TO JUNE, 187L 



[EW HAVEN: E»ITORS. 

 1871. 



