I
--3
340
306
of four year
appears to me
and that it
that such a
break
in the observations would
greatly
impair the value.
of.
the
Kcords.
I have lately received
the Observations made at the Hong
a copy of
Hong
Observa
a bory
in the year 1887
from which it
appears
that
the
magnetic cha
1884 to 1887
and
Dip
as
ar
changes in the four years
ar
by
no
means
insignificant
both
now
after having
the Variation and the
apparently diminishing
inceased for a
number of years, observations made in
the rest
few years will be peculiarly
valuable in
deciding
this point.
and
1