Cyclone Frequency, 1878/1887
Cyclone frequency over the Northern Hemisphere in 1878-1887

Cyclonic Areas, 1878/1887
Average tracks of cyclonic areas, by months and seasons, over the Northern Hemisphere, from 1878-1887.

Isobaric and Wind Charts of Northern Hemisphere, 1909
Illustrates wind patterns and directions as well as pressure patterns in the Northern Hemisphere during January and July.

Isobars in December, 18821215
Chart showing isobars on December 15, 1882.

Isothermal Charts of the Northern Hemisphere, 1909
Northern Hemisphere regions of similar temperatures are shown for January and July.

Magnetic Meridians in Northern Hemisphere, 1888
Shows the lines of magnetic force from the North Pole region thru the Northern Hemisphere.

Northern hemisphere, 1909
A map of the Northern hemisphere, sometimes referred to as the "land hemisphere".

Northern Hemisphere, 1919
Nearly half of this hemisphere is land.

Paths of Cyclones, 1896
Paths of numerous cyclones in the Northern Hemisphere.