Upon a petition to the selectmen for a highway between two fixed bounds, their laying out of a way beginning at one of the bounds, but not extending to the other, may be valid. In the return of selectmen laying out a highway, the description of one of the courses as extending from a fixed bound "southerly" a certain distance over land of A, and thence "south, over land of B to another bound, does not necessarily show that the return is void for uncertainty. A road constructed on other courses than those described in the judgment laying it out is not a legal highway.