428 
INDEX. 
Collie’s, 7 ; determination of heights 
by, example and tables, 214-218 
Bar-Subtense survey, extracts from 
Col. H. C. B. Tanner’s paper on, read 
at British Association, 113-116 
Bartholomew’s Physical Atlas, vol. iii., 
Meteorology, 213 
Base line, different methods of measuring, 
75 ; extending, by triangulation, note 
and diagram, 121 
Bearings with prismatic compass, how 
to take, 12; rules for obtaining the 
true bearing from the magnetic by 
applying the variation, 12; bearings 
taken on route survey, plotting the, 
78 ; observations for, 204-208 
Bearing of a peak, &c., to find the true, 
by means of its angular distance from 
the sun, 204-205; sextant example, 
206 ; theodolite example, 207 
Blank maps, ruled for latitude and 
longitude, 7 
Blotting paper, 6 
Hoard, drawing, 5 
Boiling-point apparatus, description of, 
with illustration, how to use, 13 
Boiling-point thermometer, determina¬ 
tion of heights by, example and 
tables, 209-214 
Books for travellers, 6 
Box, or pocket sextant, description and 
adjustments of, with illustration, 
20-22 ; box sextant, use of, in con¬ 
nection with plane table surveying, 
109 
Brandauer’s Oriental Pens, 6 
Bridges Lee, J., his article on photo¬ 
graphic surveying, 123-132; Bridges 
Lee photographic camera, illustration 
and description of, 124 
Broken Survey with a plane table, 107 
Brushes, paint, 6 
Buchan, Dr. A., his meteorological charts 
in “ Challenger Report ” referred to, 
214 
Camera, Bridges Lee’s photographic, 
description and illustration of, 124; 
price of, 126-127 ; plate from photo¬ 
graph taken with, 127 
Canes useful for measuring distances in 
surveying through forests, &c., Ill 
Centering error of sextant, 19 
Challenger Report, meteorological charts 
in, referred to, 213 
Chambers’ Mathematical Tables, 6 
Chauvenet’s Practical Astronomy, 7 
Chronometers not recommended to tra¬ 
vellers owing to difficulty of carry¬ 
ing, 3 
Chronometers, pocket, price of, half¬ 
chronometer watches preferable to for 
explorer, 43 
Circum-meridian observations for lati¬ 
tude, sun example, 142-143; star 
example, 144-145 
Clinometer, 8 
Collimation, adjustment for, in theodo¬ 
lite, 26 
Compass, pocket, form recommended, 3 ; 
description of, with illustration, 11 
Compass, prismatic, form, recommended, 
3 ; charges for testing at the National 
Physical Laboratory, 8; description 
of, with illustration, 10 
Compass, orienting and fixing plane 
table by, 105 
Compass, error, of, to find, 93 ; to find by 
sun’s azimuth, example, 208 
Conical projection, rules and tables for 
constructing various modifications of 
the, 61-72 
Constants and numbers, table of useful, 
282 
Contouring with Bridges Lee’s photo¬ 
graphic surveying camera, 132 
Curvature and refraction to correct an 
angle of elevation of a peak, &c., for, 
55 
