The American Printer: A Manual of Typography / Containing practical directions for managing all departments of a printing office, as well as complete instructions for apprentices; with several useful tables, numerous schemes for imposing forms in every variety, hints to authors, etc.

by Thomas MacKellar

The latter is open in the middle, the former joined across.

C (C) and E (E).

E (E) has a little stroke in the middle, projecting to the right, which C (C) has not.

G (G) and S (S).

S (S) has an opening above, G (G) is closed, and has besides a perpendicular stroke within.

K (K), N (N), R (R).

K (K) is rounded at the top, N (N) is open in the middle, R (R) is united about the middle.

M (M) and W (W).

M (M) is opened at the bottom, W (W) is closed.