These sketches were
also suggested for problems in arithmetic. The problems relate to lumbering,
measurement, and commission.
No. 1 illustrates
the beginning of a forest sketch. With a single stroke of the chalk, accented
at the lower end, draw the sky. With a second more delicate stroke show the
distance; then with a few quick, nearly vertical strokes with the eraser show
the positions of the trees. Later with chalk or charcoal and the use of such
strokes as those given on plate 2, and at No. 3 on this plate, add the shading
in the tree trunks.
No. 2 shows the
strokes useful in drawing the camp, the wood pile, or the lumber. These have
already been given in such sketches as those on plate 15.
The sketch of the
house in the original had the dimensions marked upon it, and the pupils were to
find the shingles required for the roof, the clapboards for the walls, etc.
Before trying this sketch, study plates 15 and
16 for strokes and details.