[Page 31]:

°
Lat. Capitol38:53,N
Long0:0.

Observations
explanatory of the
Plan.

I.The positions for the different Edifices and for the several Squares or Areas of different shapes, as they are laid down, were first determined on the most advantageous ground, commanding the most extensive prospects, and the better susceptible of such improvements, as either use or ornament may hereafter call for.
II.Lines or Avenues of direct communication have been devised to connect the separate and most distant objects with the principal, and to preserve through the whole a reciprocity of sight at the same time. Attention has been paid to the passing of those leading Avenues over the most favorable ground for prospect and convenience.
III.North and South lines intersected by others running due East and West, make the distribution of the City into Streets, Squares, &c.; and those lines have been so combined as to meet at certain given points with those divergent Avenues, so as to form on the Spaces “first determined,” the different Squares or Areas.
F.I.Pts.
Perpendicular height of the source of
Tiber Creek above the level of the
tide in said Creek
-236.7.⁵⁄₈

This branch and that of the Tiber may be
conveyed to the President’s house.

The water of this Creek may be conveyed
on the high ground where the
Capitol stands, and after watering
that part of the City, may be destined
to other useful purposes.

The perpendicular height of the ground
where the Capitol is to stand, is
above the tide of Tiber Creek 78
Feet.

F.I.Pts.
Perpendicular height of the West
branch above the tide in
Tiber Creek
-115.7.²⁄₈