C. Determination of Azimuth. 
Observer: Lieutenant Scott-Hansen. 
The hours are counted from the same noon as in the preceding observations. The meas- 
urement of azimuth having usually been made in combination with the determination of local 
time, the comparisons between the watch and chronometer Hohwii are not given in the following 
list, except in the few cases when they are not to be found in List A or B. 
The position of the ocular is given only when noted in the original. 
The two columns headed “Horizontal Circle” correspond to the readings of the two micro- 
scopes (or verniers) in the same manner as for the vertical circle in List A. 
The striding level of the horizontal axis of the great instrument was always read off in 
its two positions, but here only the swm of the numbers is given, the two ends of the bubble 
being indicated, as in the original, by N, S or E,W. The difference between these numbers 
will then give the inclination of the axis in seconds of are. 
In the column headed “Object”, C indicates the mark in the magnetic observatory. As 
stated in the introduction, the purpose of these observations was to furnish a line of reference 
for the determination of magnetic declination. The results, as far as the astronomical part of 
the work is concerned, are therefore here given at once in the column headed A, which is the 
azimuth of the celestial object, counted from north through east, and corrected for the inclination 
of the axis. The direction of the star being given by this number, the sign of the inclination 
of the axis, as given by the level, is easily found. 
In some few cases the small altazimuth bas been used for these observations. 
The following list also contains some determinations of azimuth made directly with the 
magnetic theodolite which was provided, for this purpose, with a mirror, placed before the object 
glass of the horizontal telescope, and moveable about a horizontal axis; the position of its axis 
is indicated by M. r. or M. t. (mirror right, or turned) which, in order to save room, is inserted 
in the column “Level”. The mirror could be used with the celestial object in front or behind. 
When the object was sufficiently low, the telescope could be used without the mirror. As a 
check on the stability of the instrument, the telescope was also in this case, before and after 
the observations, pointed to a terrestrial mark, here called m, which gives a sufficient indication 
of the use of this instrument. While the observations of the magnet could be made without 
the telescope, this was always used for the celestial object and the terrestrial mark. 
Preceding and following limb are indicated by P. L. and F. L. 
