These exercises are intended to teach the students the conventional signs used in topographical drawing, and to give them facilities with the pencil and brush for producing shaded maps, and in reducing them from one scale to another.

SECOND PART.—INSTRUCTION IN TOPOGRAPHICAL SURVEYING.

This instruction comprises:

1st. Lectures given in amphitheatre.

2d. Practical lectures or exercises.

3d. The execution of topographical surveys.

First Section.—Oral Lectures.

These lectures are divided in two classes, which comprehend:—

1st. Those relating to the description of the instruments, and of the methods used in topography.

2d. Those which have reference to the manner in which the students should proceed in the execution of the work, and principally of surveys of limited extent.