THE PRINCIPLES

EXAMPLE

The first figure on this Plate is an O, or a Circle with a point in the middle, marked No 1. The second is a Square, with a point in the middle, marked No 2. The third is a Triangle, with a point in the middle, marked No 3. The fourth consists of two long, perpendicular, and parallel lines, marked No 4. The fifth has two much shorter lines, perpendicular and parallel; marked No 5. The sixth has two longer and closer lines, perpendicular and parallel, marked No 6. The seventh has two lines, as short as those in No 5, but more spaced apart, perpendicular and parallel, marked No 7. The eighth is a Circle, with a straight line crossing it through the middle, marked No 8. The ninth is a Square, with a perpendicular and a horizontal line, which divide it evenly in the middle, marked No 9. The tenth is an Equilateral Triangle, with a perpendicular line, cutting it in two from top to bottom; and a horizontal line cutting it across, marked No 10.

The figures we display here to the young students will not seem difficult to imitate, because they are already practiced in drawing Lines; but to ensure none of them are discouraged from learning them well, we must promise that as soon as they can trace them accurately, they will be given something prettier to copy; & they will take extraordinary pleasure in it.

THIRD LESSON

After thoroughly explaining to the Students what a Circle, a Square, and a Triangle are, as marked in the previous Lesson, they are taught to trace them as best they can; by means of a Compass & a Ruler, the former used to form Circles, and the latter for drawing all sorts of straight Lines, whether perpendicular, oblique, or horizontal. A promise is made to the one who performs this task the best with a print, or some other small mark of honor. This encourages them to compete with one another humorously and amiably.