This special limit of storms, this eddy of the winds in Iowa, deviates
more or less in the district assigned to it, and, at times, some of
these northeasters undoubtedly blow over Minnesota, but they are few,
and much modified in kind and character. The elevation of the State over
other portions of the great valley south of it adds something probably
in determining the outline of the Iowa basin of precipitation.

The range of the thermometer in the hot season is, in Minnesota, above
that of places occupying the same lines of latitude; this is caused, in
part, by the arid continental winds and by a less cloud-obstructed
sunshine, but the heat is not correspondingly oppressive with that of
other localities, since the atmosphere is not as humid. The evaporation
under this heat of summer rises out of the immediate region of the
surface, and is borne away on the prevailing winds to the lake district
and eastward. It is unfortunate that there have been no tests of a
hygrometic character maintained through any great period, whereby
reliable data could be adduced, since it would have seemed as easy for
the government to have undertaken that branch of meteorology as any
other, it only requiring a more careful and accurate hand than do the
other observations. The delicacy of these experiments have proved too
wearisome for private parties, and there is over the whole country a
lack of this scientific evidence. The last report of one of the cabinet
ministers at Washington calls attention to the need, and benefit
arising from reliable testimony, under this head, and asks an
appropriation, which it is hoped may be granted, in the interests of
both health, agriculture, and science generally.

The question of climatic treatment and cure for certain ills is
receiving yearly increased attention, and this will continue until a
specific climate is found for many of the most destructive diseases