Catacoonamug & Mulpus Brooks are from one to two Rods in width. The Plan contains every thing relative to the two last mentioned Towns necessary to be described. OLIVER PRESCOTT, Ju'r. What is enclosed in this Blue line, contains about the quantity of Land set off from Groton to Dunstable, by Act of the General Court, passed February 25, 1793. As by said Act, the petitioners and their Farms were set off, without specifying particular bounds, Accuracy cannot be obtained, with respect to this Line, without very great expence and Trouble. By an act passed February 6, 1798, a considerable portion of territory lying on the easterly side of the Nashua river, in the south-west corner of Groton, was annexed to Shirley. This tract continued to form a part of Shirley until the incorporation of Ayer, on February 14, 1871, when its political condition was again changed, and its government transferred to the new town. The act authorizing the annexation is as follows,--and I give it entire in order to show the loose way of describing boundary lines during the latter part of the last century:-- An Act to set off certain Lands from the town of _Groton_, and annex the same to the town of _Shirley_. BE _it enacted by the Senate and House of Representatives, in General Court assembled, and by the authority of the same_, That a tract of Land at the south western extremity of the town of _Groton_, bounded by a line beginning at a large white oak stump, on the southeast side of _Nashua River_, being the northwest corner of the town of _Harvard_; thence running southeasterly on _Harvard_ line, as the town bounds direct, till it comes to the stump of a pine tree lately fallen down, an antient bound mark in said town line; thence northerly to a heap of stones by the road leading to _Harvard_ at SIMON DABY'S southerly corner, thence northeasterly on said SIMON DABY'S line to a pine tree marked, thence northerly to a heap of stones on a ledge of rocks; thence northerly on said SIMON DABY'S line to a heap of stones on a large rock; thence northwesterly still on said SIMON DABY'S line to a stake and stones in the roots of a pine tree, fallen down, in a valley, said SIMON DABY'S northeast corner and SAMUEL CHASE'S southerly corner, thence northerly on said SAMUEL CHASE'S line, to the road leading to ABIL MORSE'S mill, at a heap of stones on the north easterly side of said road, thence northeasterly on said SAMUEL CHASE'S line by said road to a heap of stones, thence northeasterly on said CHASE'S line, to a stake and stones at the end of a ditch at a brook; thence down said brook to _Nashua River_, thence up said river, to the bounds first mentioned, together with the inhabitants thereof, be, and they are hereby set off from the town of _Groton_ and