TABLE XVII.

RISE PER MILE OF VARIOUS GRADES.

21.648 1.ΟΙ 53.328 1.61 22.176 1.02 53.856 1.62 22.704 1.03 54.384 23.232 1.04 •45 23.760 1.05 24.288

85.008 4.10

216.480

85.536 4.20 221.760

1.63

86.064 4.30

227.040

54.912
55.440

1.64

86.592

4.40

232.320

1.65

87.120 4.50

237.600

24.816

⚫49

1.06 55.968 1.66 1.07 56.496 25.344 1.08 57.024 1.68 25.872 1.09 •50 26.400 1.10 26.928 I.II 58.608 1.71 90.288 5.10 27.456 59.136 .53 27.984 1.13 59.664 1.73 91.344 .54 28.512 1.74 91.872

87.648 4.60

242.880

88.176 4.70

248.160

253.440

57.552 1.69

89.232 4.90

258.720

58.080 1.70 89.760 5.00

264.000

269.280

60.720 1.75

61.248 1.76 92.928 5.60

92.400 5.50

290.400

295.680

300.960

5.80

306.240

94.512

5.90

311.520

Acres, roods, and perches in square feet, Table VI.
Adjustment and use of instruments

to find radius, length, degree, apex distance, chord, versed sine,

161

51

how to proceed when the P. C. is inaccessible

to shift the P. C. in order to strike a fixed tangent

to change radius from same P. C. in order to strike a fixed tan-
gent.

to triangulate on

97

94

to pass through a fixed point

127, 128

Curves, compound,

how to proceed when the P. C. C. is inaccessible

95

to compound a curve in order to strike a fixed tangent

to shift a P. C. C. in order to strike a fixed tangent
summary of rules for

99

101

to compound into a tangent intersecting main curve on concave
side

102

to compound into a tangent intersecting main curve on convex
side

to shift a P. R. C. in order to strike a fixed tangent

to substitute a curve for a tangent connecting two curves

109