THE SCiENOE OF FRONTIER DELIMITATION. 
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1 Q" sextant reading to 10". 
1 Artificial horizon and mercury. 
]. Spare bottle of mercury. 
1 Large prismatic compass with tripod stands for taking 
magnetic variation and for general use. 
3 Pocket prismatic compasses. 
3 Plane tables—complete. 
3 Sketching cases. 
3 Cavalry sketching cases. 
1 Perambulator (as strongly built as possible). 
1 Chain. 
2 Or 3 steel tapes graduated to read yards on one side and 
metres on the other. 
1 Good aneroid barometer. 
2 Good ordinary thermometers. 1 
4 Heliostats (if heliographs are not takeu). 
2 Good field-glasses. 
2 Good field-telescopes. 
3 Half chronometer watches (keyless). 
1 Apparatus for determining longitudes by absolute methods, 
either transit instrument, astronomical telescope or Capt. 
Hilhs camera. The last can be used by anyone with 
very little training, the only drawback in its use being 
that the calculations cannot be done locally. 
A quantity of decimal paper ruled to the scale on which the 
field work is to be done. 
Plenty of white and black cotton for making flags for 
trigonometrical points. 
5 Dozen Union Jacks to be given to chiefs and headmen of 
border towns cut into English territory. 
A number of scales for use in the field (scales should be 
divided to read metres when working with commissions 
from countries using the metric system). 
A number of blank sheets of mounted paper with a projection 
on the scale to be used on the field. 
It is very desirable that the commissioner should be able to 
communicate with his foreign colleague during the pre¬ 
paration stage and should agree with him on the scale 
to be used for field work. This precaution will save 
much complication later on, and the commissioners will 
be able to give each other much assistance in the survey 
work. 
A pedometer may be taken, but it is not to be depended upon 
and acts badly when the ground is not hard and firm. 
A good case of instruments should be included, and a despatch 
1 Ordinary thermometers are, I think, preferable to maximum and minimum thermometers. 
The minimum thermometer is very liable to get out of order, and when, the weather being unbear¬ 
ably hot, it reads fas ours did) 20° below freezing point, it is apt to become annoying, and there 
is some danger of the instrument being broken. 
