Sidebilder
PDF
ePub

To find the difference of latitude and departure of CD.

Stations. Bearings. Dist. | N. L. S. LE. D. (W. D.

[blocks in formation]

To find the difference of latitude and departure of DE.

Stations. Bearings. | Dist. |N. L. S. L. E. D. JW. D.

[blocks in formation]

To find the difference of latitude and departure of EF.

Stations. Bearings. | Dist. | N. L. S. L. E. D. | W.D.

[blocks in formation]

To find the difference of latitude and departure of FG.

Stations. Bearings. | Dist. | N. L. S. L. E. D. W. D.

[blocks in formation]

To find the difference of latitude and departure of GA.

Stations, Bearings, Dist. N. La S. L. E. D. W. D.

[blocks in formation]

This being done, proceed to bring into a traverse table, the difference of latitude and departure of the several boundary lines, viz. AB, BC, &c. In the column for bearings, put the letters to denote the bearing of each line, and leave a blank for the degrees; also the distance column leave blank.

[blocks in formation]

With the difference of latitude and departure of AB, find the bearing and distance, thus:

[blocks in formation]
[blocks in formation]

I have set down the operations in full, for finding the bearings and distances of the two first lines, as the difference of latitude of one, and the departure of the other, is less than unity, (see page 55) and made that side of the supposed triangle radius, which is more than unity; proceed with the difference of latitude and departure of the other lines, as before directed, and the several bearings and distances will be found, as in the preceding traverse table. These operations will be profitable for the learner to work in full.

[ocr errors]

The foregoing is the best method of finding the area of a piece of land taken by intersections; but for the sake of some variety, enlarging the ideas, and ripening the judgment of the learner, I shall find the area of the preceding by Problem 10, page 111, and first find the area of the triangles formed from the point I, to these corners of the field which include no part of the Map; and then to those including the Map, and the sum of the outward triangles taken from that of the inward, will leave the double area

[merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small]
« ForrigeFortsett »