ord and West Cambridge extended into the pond so nearly that a plank would bridge the strait, and in which was but slight fall.
Of this entire work of so much magnitude and importance but little has been preserved in Medford annals, and but for the fact that one of the engineers engaged on the work made a private record of his doings from start to finish it would be difficult at this time to ascertain the facts.
Preliminary surveys were begun on a high bluff east of the Narrows on April 14, 1862, by two engineers, with a laborer to assist, and on April 16 Roberdeau Buchanan joined them.
It was he who made the record to which we allude.
It is illustrated by accurate drawings of the entire work, explanatory of the text of his record, and is now in the office of the Metropolitan Water Commission, by whose courtesy we were permitted to examine its interesting pages and compile this account.
These engineers reached Walnut hill, the site of the distributing reservoir, on April 25