XLVII. To locate a turnout.
XLVIII. Crossings on straight lines
XLIX. Crossings on curves
L. Elevation of the outer rail on curves.
Table for same
LI. Trackmen's table of curves and spring of rails. 143
Explanation of same
LIST OF TABLES.
I. Time of meridian passage of North Star above the
pole for the year 1870, and on
II. Time of extreme elongation of North Star for the
year 1870, lat. 40°, and on .
III. Azimuths of the North Star, and their natural tan-
IV. Roods and perches in decimal parts of an acre 151
V. Decimals of an acre in one chain length of 100 feet,
and of various widths.
VI. Acres, roods, and perches in square feet
VII. Circular arcs to radius of 1
VIII. Feet in decimals of a mile
IX. Inches reduced to decimal parts of a foot
X. Radii and their logarithms, middle ordinates, and
XI. Squares, cubes, &c., of numbers from 1 to 1042 .
XII. Logarithms of numbers, 1 to 1000.
XIII. Logarithmic sines, cosines, tangents, and cotan-
XIV. Natural sines and tangents
XV. Chords, versed sines, external secants, and tangents
of a one-degree curve .
XVI. Slopes for topography
XVII. Rise per mile of various grades