In middle latitudes such upper currents are not so evident, except before a change of weather.
Snow is observed in all latitudes and at all heights, but hail is confined to middle latitudes, and is rare in high latitudes.
In all cases the occurrence of glaciation in low and middle latitudes is probably due to the same general causes.
The inhabitant of the middle latitudes of this continent has no data to picture to himself what a snowstorm in the north may be.
The four seasons are important characteristics, especially of the middle latitudes of the north temperate zone.
In middle latitudes the deciduous forests go to the opposite extreme and furnish the most highly favored of the homes of man.
To these should be added in the South and middle latitudes, sooty blotch and bitter rot.
In middle latitudes the temperature of the stratosphere averages something like 68 below zero Fahr.
The amount of precipitation on the sheets was presumably lessened still further by changes in the storminess of middle latitudes.
The storms would also apparently follow paths in middle latitudes somewhat as they do now when sunspots are fewest.
the two regions of the earth between 20-50 degrees geomagnetic latitude