The manner of Walling by unequal Courses call'd Isodomum by the Ancients, differs in nothing from the Masonry call'd Bound-Masonry, but only in this, that the Stones are not hewed. See Figure D. Table I.
The other manner by unequal Courses call'd Pseudisodomum is also made of unhewed Stone, and laid in Bound-Work, but they are not of the same thickness, and there is no equality observ'd, but only in the several Courses, the Courses themselves being unequal one to another. See Figure A. Table I.
The Masonry which is fill'd up in the middle, call'd by
