"Hertfordshire or Herts, an inland county, bounded on the NW by
Beds, on the N by Cambridgeshire, on the E by Essex, on the S by Middlesex,
on the SW by Bucks. Its outline is very irregular, but may be described
as ovoidal, extending from NE to SW, pretty regular in the NE half, but
very much indented in the SW half. Its E boundary, from about the middle
southward, is traced by the rivers Stort and Lea. It greatest length is
about 39 miles; its greatest breadth is about 27 miles; its circuit is about
135 miles, and its area, according to the returns furnished by the Ordnance
Survey Department, is 406,161 statute acres. ."
from The Comprehensive Gazetteer of England and Wales, 1894-5
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