X

CONTENTS.

CHAP. X.

PAGE.

Hendon and Finchley Survey . . . . .38

Filling in on Railway Surveys . . . . .40

Plotting throughout . . . . .42, 46, 47

CHAP. XI.

Great Wigston Survey . . . . . .48

Filling in Right Side of Base Line, B.C. . . . .49

Left Side of Base Line, B.C. . . . .52

Base Line A.B. . . . . .52

CHAP. XII.

. 54. 60. 61

Part

By the

CHAP. I.

Method of taking a Horizontal Angle To take a Vertical Angle

Adjustments ....

Parallax ....

The Vernier ....

CHAP. II.

A FEW GENERAL REMARKS UPON THE THEOBOLITE.

I. —As compared with other instruments . . . .74

II, —As to its own Modes of Application . . . .75

CHAP. III.

USEFUL PROBLEMS IN SURVEYING WITH THE THEODOLITE.

I. —To produce a given line inaccessible and invisible from the required point

of production . . . . . .77

II. —To Measure the Angle between two Inaccessible Lines . . 78

III. —To determine the Distance between Two Inaccessible Objects . 78

IV. —When the line connecting CB cannot be produced . . 80

V. —When no one point can be found whence they are both visible . 81

VI. —When from the character of the country no horizontal measurement

can be taken to determine the height of a hill by a Theodolite . 82

VII. —By a Sextant . . . . . .83

66

67

70

g,MOK®„

Theodolite .

Parish SurveyingUseful ProblemsMode of Plotting

Surveying by the Theodolite Example I. By a Back Angle„ II. By two Stations

CHAP. IV.

84

8589