BOSTON SOCIETY OF NATURAL HISTORY. 



247 



COMMITTEES ON DEPARTMENTS. 



Thomas T. Bouv^, 

 Charles T. Jackson, 



Geology and Minerals. 



Elected. Retired. Elected. 



1870. 1872. William T. Brigham, 1870. 



1870. 1872. 



The departments of Geology and Minerals, united in 1870, were separated in 1872. 



Retired. 

 1872. 



1879. 



1878. 



1880. 



1880. 



1877. 



1871. 



1875. 



