a) 
ensure such accuracy the finest geodetic instruments and the most 
skillful and trustworthy engineers were required. Under the efficient 
superintendence of Engineer James P. Bogart, the requisite instru- 
ments were purchased, and two parties were sent out to complete the 
work—one under Assistant Gershom Bradford, of the U. S. Coast and 
Geodetic Survey Office, and the other under Engineer john G. 
Bramley, of New York. Mr. Bradford was detailed to assist in this 
work by the courtesy of Prof. J. E. Hilgard, Superintendent of the 
U.S. Coast and Geodetic Survey, the Commissioners being required 
to pay only for the trifling incidental expenses of Assistant Bradford 
and his aides while engaged in the work. With the help of these 
accomplished engineers, one hundred and eighteen triangulation 
points have been determined and mapped during the past year. The 
triangle sides vary in length from one mile to seventeen miles. Per- 
fect meridian lines have thus been secured, and the probability of 
errors materially reduced. The quality of the work thus accom- 
plished is shown by a special request from Superintendent Hilgard 
for a copy of the field notes. The completion of this work of trian- 
gulation, a reduced map of which is hereto appended, now enables 
the Commissioners to locate and map with accuracy any lot within 
their jurisdiction, 
With respect to the shore east, between the Connecticut River and the 
Rhode Island line, a reconnoisance was made, occupying two weeks’ 
time; and the requisite points were selected along the coast, which 
were submitted to Assistant S. C. McCorkle, of the U. S. Coast Sur- 
vey, who was in charge of that section for the resurvey of the Sound. 
Assistant McCorkle promised that the points so selected should be 
triangulated as far as possible during the prosecution of his work for 
the government. As no serious harm would result from delay in 
locating and mapping grounds in that section, and as it would save 
considerable expense to have the work of triangulation done by Mr. 
McCorkle as proposed, the Commissioners will wait for the results of 
his valuable labors before sending an engineer into that field. 
The locating and buoying of lots has been continued wherever it was 
found practicable. All the engineers have at times been engaged in 
this work—not to omit Engineer D. C. Sanford, of New Haven, to 
whom a large share of the work fell, and whose efficiency and capacity 
have been duly appreciated. ‘The number of buoys located and 
sextant positions determined on the grounds during the past year is 
538. A large number of lots remain to be located and buoyed, and 
the work will be resumed at the earliest practicable moment in the 
