vestige a trace, mark, or sign of something that once existed but has disappeared.
curates clergymen.
a posteriori (Latin) from effect to cause; based on observation rather than theory.
intelligible clear, comprehensible, understandable.
Pteraspis the first vertebrate, according to Lyell; a fish, existing 400 million years ago, related to the sturgeon, used by Adams as a symbol of sequence and continuity throughout the Education.
audacity bold courage, daring.
