1854–1864
Jean Louis Rodolphe Agassiz, 1875
Joseph Alexander Ames, 1862
Jean Louis Rodolphe Agassiz, 1874
Joseph Alexander Ames, 1858
Jean Louis Rodolphe Agassiz, 1855
Jean Louis Rodolphe Agassiz, 1869
Joseph Alexander Ames, 1840