( p´ n) (KEY) , fl. 2d cent., Roman historian. He was a Greek, born in Alexandria. He held various offices in Alexandria, was an advocate in Rome, a...
1749–1810, American scientist in the old Southwest, b. near Elgin, Scotland. He came to America in 1771. Commissioned by President Jefferson to inve...
1785–1873, English geologist. He was a professor at Cambridge from 1818. His most important work was a study, made with R. I. Murchison, of the rock...