vi LISTOFPLATES. 



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



Winter, in the Pour 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 Su"-o-estive 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. DeSectiun- Forces, showing the effect of Annual, Monthly and Diurnal Variation. 



