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PHILADELPHIA:
COLLINS, PRINTER, 705 JAYNE STREET.

LIST OF PLATES.

Plate 1.

Annual Direction of the Upper and Lower Current in the United States. Plate 2. Mean Annual Direction of the Wind in the Arctic Regions. Plate 3. Mean Annual Direction of the Winds of the Globe, between 80° North Latitude and 56°

South Latitude. Plate 4. Mean Direction of the Wind, for the Four Seasons, in the Antarctic Regions. Plate 5. Mean Direction of the Wind, in the Summer (June, July and August), between 80°

North Latitude and 56° South Latitude. Plate 6. Mean Direction of the Wind, in the Winter (December, January and February), between

800 North Latitude and 56° South Latitude. Plate 7. Mean Direction of the Wind, in the Four Seasous, between 80° North Latitude and 56°

South Latitude. Plate 8. Mean Direction of the Wind, in the Four Seasons, in the United States. Plate 9. Mean Direction of the Wind, in the Four Seasons, in Europe. Plate 10. Monsoon Influences, in the Four Seasons, between 80' North Latitude and 56° South

Latitude. Plate 11. Monsoon Influences, in the Four Seasons, in the United States. Plate 12. Monsoon Influences, in the Four Seasons, in Europe. Plate 13. Mean Annual Direction of the Wind in the United States : showing the Resultants

obtained by taking the Velocity into account, as compared with those derived from

Time only. Plate 14. Maps of Isobars or Lines of Equal Atmospheric Pressure at Sea-level, for the Year,

January and July. Plate 15. Relative Prevalence of Winds from the Different Points of the Compass, in Summer

and Winter, in the Arctic Regions. Plate 16. Relative Prevalence of Winds from the Different Points of the Compass, in Summer and

Winter, in Europe, south of Latitude 60°. Plate 17. Relative Prevalence of Winds from the Different Points of the Compass, in Summer

and Winter, in Asia and Africa, between 25 and 60° North Latitude. Plate 18. Relative Prevalence of Winds from the Different Points of the Compass, in Summer

and Winter, in the Tropical Regions, North of the Equator. Plate 19. Relative Prevalence of Winds from the Different Points of the Compass, in Summer

and Winter, in the Tropical Regions, South of the Equator. Plate 20. Relative Prevalence of Winds from the Different Points of the Compass, in Summer

and Winter, in the Southern Temperate Zone, between Latitude 25' and 60' South.

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Plate 21. Relative Prevalence of Winds from the Different Points of the Compass, in Summer and

Winter, in the Four Seasons. Plate 22. Relative Prevalence of Winds from the Different Points of the Compass, in Summer

and Winter, in the United States. Plate 23. Barometrical Wind-Roses. Mean Annual Direction of the Wind contrasted with the

Direction of the Wind that accompanies Maximum or Minimum Pressure. Plate 24. A Suggestive Chart, showing the Relation of the Winds to other Meteorological

Elements.
Plate 25. Chart illustrating the effect of Velocity in modifying the Annual Direction of the

Wind.
Plate 26. Deflecting Forces, showing the effect of Annual, Montbly and Diurnal Variation.

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