Dyer’s.—Description nearly the same as that of Dimick’s.

INDEX.

The pages refer to the sidenotes in the margin of the text.

Footnotes:

[1] The new columbiad is made without a chamber.

[2] A couple of notches or indentations are made on the ends of the eccentric axles. When these notches are in a vertical line, the wheels rest on the rails; but when they are in a horizontal or inclined line, the ties rest on them.

[3] The 2d method was suggested to me by Captain Vogdes, 1st Artillery, U. S. Army.

[4] [See Table, pages 126, 127].

Transcriber’s Notes: