OF THE STATE OF CONNECTICUT. 13 
~ 
Every branch of the work has been pushed towards completion 
as fast as possible, and certainly with as much economy as con- 
stant and anxious watchfulness could secure. The books, maps, 
documents and records in the office are silent but unimpeachable 
witnesses of the work accomplished, and the thorough and sys- 
tematic methods observed in every department. 
The engineering records fill one hundred and seventy books, 
containing an aggregate of very nearly ten thousand double 
pages. 
The buoy-book records, alone, number forty-eight volumes, 
comprising in the aggregate two thousand seven hundred and 
eight double pages. 
Of these records forty-eight volumes have been duplicated. 
There are sixteen volumes of buoy angle books showing the 
sextant angles for setting buoys, which buoys are numbered con- 
secutively from one to eighteen hundred and thirty-one, all of 
which have been set to mark the corners of lots. Of these books 
there are duplicate copies—one set for the office, and the other to 
use on the water. 
There are five volumes of field records, containing notes of 
surveys made along the shore and elsewhere. 
There are also six volumes containing notes of preliminary 
surveys. 
There are three volumes within which all the details pertaining 
to signals are recorded, with maps and mathematical data. 
There are twenty-four volumes of observations of horizontal 
angles,—standard triangular work—with all the points mathemat- 
ically determined, serving as a basis of reference for surveys of 
every designation in the Sound. 
There are four volumes wherein are recorded for preservation 
the draft description of every piece of ground designated by the 
Commissioners—about five hundred and eighty-three parcels. 
There are eight volumes of triangulation and survey notes per- 
taining to the determination of the boundary line between Rhode 
Island and Connecticut. 
These have the mathematical description of every geodetic 
point in and about the boundary line; which line, in all its details, 
is shown on duplicate maps, each thirty feet in length—all made 
in the office. 
Over one hundred and fifty maps are on file, most of which 
have been made in the office, and these maps are subject to con- 
