| Rec | Mtg# | Year | Authors | Institution | Talk title |
|---|---|---|---|---|---|
| 1 | 27 | 1895 | John Wesley Powell† | Bureau of Ethnology | Classification and seriation: the position of geology among the sciences |
| 2 | 69 | 1897 | John Wesley Powell† | Bureau of Ethnology | An hypothesis to account for the movements in the crust of the Earth |