Hexagonal Mortar
Rounded stones placed in a matrix of mortar which is depressed in the center around the stone and slopes up from the stone gives a dish-like appearance. The adjacent areas contacted by a single "dish" give the outer edge of the "dish" a hexagonal outline. This type of masonry is usually found on the side or back walls, and only one house [in the Roudabush Survey] has been found in which all walls have this type of structure.
Hexagonal mortar is found on 28 of 90 structures in Orleans County, New York state; 14 of these occur in the town of Gaines. Since Gaines has a total of 28 structures, the hexagonal configuration occurs on 50%.
Roudabush Survey, Mortar Application, page 26
