Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 109
Beginningat B, take the algebraic sum of thebalanced latitudes and, also, of thebalanced departures of the stationsfollowing. These sums are, respec-tiyely, the total latitudes and totaldepartures (or longitudes, see Art. 148, Note) of the severalcourses with respect to the principalstation, B.… … Fig. 72. sta. *BCDA Total lat.from B. Total dep.from B. 0.00 4.31 -1.84 -8.86 0.00 8.12 12.58 5.44 SEC. IV.] AREA OR CONTENTS GROUND. 103 plot is to be made; and on BX lay off (to the right since8.12 is plus) Bf equal to 8.12 units of the scale. From s, as acentre, with Bf, or 8.12, as a radius,…
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