in its top, located 7 feet north of the Northern Pacific Railway, 1 mile eastward from Cabinet, Idaho, 450 feet eastward from sign "1 mile to Cabinet," 150 feet eastward from a cut at sharp curve in railroad track.

84. Iron post, stamped "63.98 M.," 1 mile south of the Northern Pacific Railway, 0.2 mile northward from Baker's house, amid heavy timber on south bank of small stream flowing N. 75° W.

85. Iron post, stamped "64.95 M.," 1.9 miles south of the Northern Pacific Railway at the foot of mountain, 100 feet west of the mouth of a small stream in deep ravine; amid heavy timber.

86. Iron post, stamped "65.70 M.," 2.7 miles south of the Northern Pacific Railway, under west brow of a long, narrow ridge, about 300 feet south from where the ridge begins steep descent; amid dense timber.

87. Iron post, stamped "66.50 M.," 3.5 miles south of the Northern Pacific Railway, on top of high east-west ridge, about 300 feet east of its junction, with a north-south ridge; amid scattering large timber.

88. Iron post, stamped "67.46 M.," on top of high east-west timbered ridge, 1 mile north of the west fork of Elk Creek, about onefourth mile east of where the ridge joins north and south ridge.

89. Iron post, stamped "68.475 M." (post should have been stamped "68.44 M."), in heavily timbered bottom, 60 feet north of the dry bed of the west fork of Elk Creek, about 1 mile west of the mouth of a creek from the southwest.

90. Iron post, stamped "69.08 M.," on top of narrow east-west ridge between the west fork of Elk Creek and a small stream from the southwest, amid timber.

91. Iron post, stamped "69.76 M.," on top of nearly bare ridge between two ravines bearing northeast.

92. Stone masonry monument, 6 feet long, 10 inches by 10 inches square, consisting of ten sections cemented and bolted together. An aluminum bench mark stamped "92-70.717 M., 4,850 feet" is cemented into the top of the monument. The monument stands on the top of

a bare grassy ridge, amid scattering dead trees, at the junction of a ridge from the west with said ridge. The ridge at this point bears NW.-SE. and forms the summit of the Bitterroot Mountains. (See Pl. XI, B.)

It will be recalled that it has been previously mentioned that an error was made in the field computation, the result of which was to locate the starting point of the random line 177 feet east of the true point. The transitman did not know of this error when he surveyed the random line, but as a result of a personal equation introduced into his work his line varied from a true line by a constant swing toward the west, so that when he reached the international boundary the point on the random line was 43 feet east of the true point. Thus, in

about 71 miles the transitman ran a line which at its terminal point was 134 feet "out" in azimuth. With this explanation the following table is self-explanatory:

Table showing number and kind of monuments, distances, elevations, magnetic declinations and time of magnetic observations along the boundary.

2 p. m.,

1 p. m.,
Oct. 30, 1898.
8 a. m., Oct. 30, 1898.

1.30 p.m., Oct. 28, 1898.

3 p. m., Oct. 27, 1898.
3 p. m., Oct. 26, 1898.
8.30 a. m., Oct. 26, 1898.

11 a. m., Oct. 25, 1898.

3 p. m., Oct. 22, 1898.
8 a. m., Oct. 22, 1898.
1 p. m.,
Oct. 21, 1898.

10 a. m., Oct. 21, 1898.

1 p.m., Oct. 20, 1898.
4 p. m., Oct. 19, 1898.
Oct. 18, 1898.

2 p.m.,

3.45 p.m., Oct. 17, 1898.

9 a.m., Oct. 17, 1898.
1 p. m., Oct. 15, 1898.

Oct. 10, 1898.

8 a. m., Oct. 10, 1898.

8.30 a. m., Oct. 8, 1898.
Noon, Oct. 7, 1898.