...e, where the canal passed under Main street and sent off a branch to the river, for the benefit of the ship-yards of Medford and Charlestown; and so on through the Mystic trotting park to the base of Winter hill , Somerville. From this point the canal followed the line of the high land around to the short bend in the Mystic river, where Dunning's coal wharf is at present located; then to the south, through ...