This manual is intended to familiarize the surveyor with the different types of old boundaries that exist throughout the country. A great deal has been written on this general subject, especially in reference to the public lands of the West. Very little, however, is being done on the conveyances of the Eastern States, and it is my hope to furnish sometlu'ng which may prove useful to those who are likely to meet with cases of this sort. No attempt is made to describe how the lines should be measured; the intent is rather to furnish suggestions as to the method of locating the line to be measured in short, finding it. It is far more important to have faulty measurements on the place where the line truly exists, than an accurate measurement where the line does not exist at all.