Note 17 — INTRODUCTION.
Reading edition
No. 1 is a view and section of a portion of the most simple kind. This and the other four kinds are here represented on a scale of about one-seventh of the real size. No. 6 shows the general proportions of the side of a projecting window. The portion A is, in most instances, of lattice-work similar to No. 1, and comprises about twelve rows of beads in the width: the portion B is commonly either of the same kind, or like No. 2 or No. 3; and the small lattice C, which is attached by hinges, is generally similar to No. 4.