TRIBUNE 





POPULAE SCIENCE. 



BY 



LOUIS AGASSIZ, R. A. PROCTOR, DR. C. E. BROWN-sfQUARD, BAYARD TAYLOR, PROF. C. F. CHANDLER, 



JOHN LEE CONTE, M. D., PROF. FAIRMAN ROGERS, PROF. A. M. MAYER, PROF. W. A. NORTON, 



MAJOR J. W. POWELL, PROF. SIMON NEWCOMB, PROF. WM. FERREL. PROF. WOLCOTT GIBBS, 



PROF. S. ALEXANDER, PROF. F. V. HAYDEN, PROF B. SILLIMAN, DR. E. BESALS, 



PROF. S. ALEXANDER, PROF. ELIAS LOOMIS, PROF. J. S. NEWBERRY, 



CAPT. C. E. DUTTON, PROF. O. C. MARSH, LIEUT. G. M. WHEELER, 



WM. A. HAMMOND, M. D., PROF. F. ALLEN, 



HON. J. H. TRUMBULL, 



AND CONTAINING " THE POET LONGFELLOW," BY JAMES T. FIELDS, AND " THE PRAYER OF AGASSIZ," 



BY I. G. WHITTIER. 



BOSTON : 



HENRY L. SHEPARD & 



(Successors to SHEPARD & GILL,) 

 I8 74 . 



CO., 



