We see this in the fact that the most eminent palaeontologists, namely, Cuvier, Agassiz, Barrande, Pictet, Falconer, E.

Forbes, etc.

, and all our greatest geologists, as Lyell, Murchison, Sedgwick, etc.

, have unanimously, often vehemently, maintained the immutability of species.

But Sir Charles Lyell now gives the support of his high authority to the opposite side, and most geologists and palaeontologists are much shaken in their former belief.