oard or clinometer and by taking elevations at points
arbitrarily selected. Our lines will look something like this:

[Illustration: Fig. 11]

Each party will be given its rectangle with the traverses sketched in.
They will each then run similar traverses over the other two sides of
their area and then fill in. In this manner the whole work is tied up
to the original lines.

Another method

The line A B, Fig. 12, is carefully plotted. Each of the four
sketching parties has two sketching groups. One group of party No. 1
traverses line a' Y; then the other group of the party traverses the
line a" y'. The first group of party of No. 2 accompanies them. The
second group of party No. 2 traverses the line c" d, accompanied by
the first group of party No. 3; the second group of party No. 3, and
the first group of party No. 4 traverse b" z', and the second group of
party No. 4 traverses b' Z. When the first group of party No. 1
arrives at Y, it traverses Y y'. The second group of party No. 1,
arriving at y', cuts the sheet along traverse and gives the first
group of party No. 2 the part which shows their area; and then
traverses toward Y from y'. Upon meeting the first group of party No.
1, they join forces and proceed to fill in their area.

[Illustration: Fig. 12]

In the same manner areas W X a' b' are filled in.

[Illustration: Fig. 13]

The method described above is useful in working over country which is
densely wooded, and in which a general view cannot be obtained, for
example, in mapping jungles.

An additional article of the sketcher's equipment is a holder for his
pencils, alidade, eraser, knife, pins, etc. This consists of a series
of small pockets sewed on to a piece of canvas about 7 inches by 4
inches. This can be attached to the left breast of the sketcher's coat
or shirt by means of two pins. In addition to keeping all of his
implements in a handy place the holder prevents the loss of the
several articles. Nothing is so discouraging to the sketcher as to
look for his pencil, eraser, knife or even alidade and find that he
has left it several hundred yards back where he sat down last to
sketch in details. By using the holder the sketcher gets into the
habit of replacing articles after they are used and consequently
always has them with him when needed. These holders ready made can be
obtained from the Secretary, Army Service Schools at Fort Leavenworth,
Kansas.

In sketching a good quality of pape