HORIZONTAL LINES.
To make these as shown in [fig. 16], proceed as follows: With the word one make a point, with two another point six inches at the left, with three draw a straight line from the left point to the right. All added lines should be parallel: for practice, reverse the process thus, one, make a “point,” at two another point at the right, at three draw line to the left.
The student will note that the two motions—at the words one and two—are to fix the positions of the ends of the lines; this practice will be found useful in the most advanced examples and an item of elementary practice never to be forgotten—like the help to be derived by the first round of a ladder.
Fig. 17.
Fig. 18.