2. When a line is mentioned in a deed as ending at a particular monument, (q. v.) it is to be extended in the direction called for, without regard to distance, until it reach the boundary. 1 Taylor, 110, 303 2 Hawks, 219; 3 Hawks, 21; 2 Taylor, 1. And a marked line is to be adhered to although it depart from the course. 7 Wheat. 7; 2 Overt. 304; 3 Call, 239; 7 Monr. 333; 2 Bibb, 261; 4 Bibb, 503; 4 Monr. 29; see further, 2 Dana, 2; 6 Wend. 467; 1 Bibb, 466; 1 Marsh. 382; 3 Marsh. 382; 3 Murph. 82; 13 Pick. 145; 13 Wend. 300; 5 J. J. Marsh. 587.

3. Where a number of persons settle simultaneously or at short intervals in the same neighborhood, and their tracts, if extended in certain directions, would overlap each other, the settlers sometimes by agreement determine upon dividing lines, which are called consentible lines. These lines, when fairly agreed upon, have been sanctioned by the courts; and such agreements are conclusive upon all persons claiming under the parties to them with notice, but not upon bona fide purchasers for a valuable consideration without notice, actual or constructive. 5 S. & R. 273; 9 W. & S. 66; 3 S & R. 323; 5 Binn. 129; 10 Watts, 324; 17 S. &. R. 57; Jones, L. 0. T.

4. Lines fixed by compact between nations are binding on their citizens and subjects. 11 Pet. 209; 1 Overt. 269; 1 Ves. sen., Rep. 450; 1 Atk. R. 2; 1 Ch. Cas. 85; 1 P. Wms. 723727; 2 Atk. R. 592; 1 Vern. 48; 1 Ves. 19; 2 Ves. 284; 3 S. & R. 331.