oltmann

Updated: June 6, 2025

Oltmann is called to his aid to revise his astronomical observations, and his barometrical measurements by which he has determined the geographical position of seven hundred different points and the altitude of more than four hundred and fifty of them.

- Great Men and Famous Women. Vol. 4 : A series of pen and pencil sketches of the lives of more : than 200 of the most prominent personages in History