Below that datum, giving an extreme recorded range slightly over 6 ft.
The first of these methods yields a hypsographical, or - if the sea-bottom be included, in which case all contours are referred to a common datum line - a bathy hypsographical map. Carl Ritter, in 1806, employed graduated tints, increasing in lightness on proceeding from the lowlands to the highlands; while General F.
Constructively as datum, never eclectically.
One close datum, if trustworthy, would be log of water = Assyrian mina implying a bath of about 2200 cub.
The seal is that of the fisherman's ring, hence the formula of conclusion, "Datum Romae, sub annulo Piscatoris."