488 FIRST REPORT UPON MAGNETIC WORK

Stations 12, 23, 32, 39, from Coast and Geodetic Survey data.

Station 30 from data supplied by Superintendent of Naval
Academy.

Station 25 from Rand & McNally's map of 1895.

The question of more precise geographical positions may be given
attention in a future report. As already explained in another part,
some of the declinations obtained may require corrections amounting
from l'-3' by reason of appreciable errors in the geographical positions
which at present had to be adopted. Such corrections, however, are
of no special concern to the surveyor.

The Coast and Geodetic Survey table is given in precisely the
same form as furnished by them. The stations in italics are secular
variation stations; west declination is marked by a plus sign; D stands
for declination and AZ) is the correction which was necessary to obtain
the reduced value, D₁₉₀₀ for January 1st, 1900. In this table, it will
be noticed, Z) is given in decimals of a degree. The values as given
refer to the mean of day (24 hours).