698 



WINDS OF THE GLOBE. 



January N. 57° W. .38 

 February N. 59 W. .30 

 March N. 65 W. .26 

 April West .14 



May S. 48 W. .21 



June S. 52 W. .32 



July S. 41° W. Al 



August S. 41 W. .25^ 

 September S. TG W. .17^ 

 October S. 84 W. .26 

 November N. 61 W. .34 

 December N. 59 W. .39 



Here the change during the year is much gi'eater than in the Middle Atlantic 

 States, namely, 82°, the winds being more northerly in winter and more southerly 

 in summer. 



The region which is left to complete the temperate zone of North America is 

 one of transition. It partakes of the character of all the surrounding areas. It 

 includes the States of Louisiana, Mississippi, Alabama, and Florida. It is bounded 

 on the west and northwest by the trans-Mississippi region, on the north by that of 

 prevailing W. S. W. winds between the Mississippi and Appalachian chain, on the 

 N. E. by the Atlantic region, and on the S. by the trade wind zone of the Mexican 

 and Caribbean Seas. (See also Plates 5, 6, 8, and 14.) 



The winds in the principal subdivisions are as follows : — 











Summer. 







Winter. 1 





H 





a 





i 





i^ 





w 





w 





^' 





^ 





a 



E5 



a 



ai 



CO 



m 



&=■ 



a 



la 



(5 



«• 



m 



» 



» 





a 



N. E. Florida 



1 



19 



5 



22 



5 



38 



5 



6 



5 



24 



2 



7 



3 



22 



7 



29 



Florida, 29O-30O N. L. . 



3 



16 



12 



24 



10 



17 



11 



7 



12 



24 



7 



le 



8 



14 



8 



17 



S. E. Florida, S. of 290N.L. . 



0.7 



13 



34 



24 



15 



4 



7 



2 



13 



20 



17 



17 



11 



4 



4 



14 



W. Florida .... 



8 



11 



6 



14 



12 



26 



10 



14 



20 



18 



9 



11 



6 



9 



6 



21 



Florida Keys, 240-250 N. L. . 



4 



12 



30 



26 



12 



7 



4 



4 



23 



26 



19 



13 



6 



3 



3 



6 



Northern Bahainas 



1 



20 



20 



46 



7 



4 



0.4 



1 



4 



33 



14 



22 



4 



7 



2 



12 



Alabama, 31O-320 N. h. 



2 



16 



8 



23 



8 



15 



10 



19 



14 



17 



5 



14 



10 



11 



4 



26 



Alabama, 320-330 N. L. 



9 



9 



12 



19 



13 



14 



14 



11 



16 



9 



8 



16 



11 



10 



12 



19 



Alabama&Miss. S. of310N. L. 



13 



13 



8 



16 



17 



13 



12 



10 



29 



12 



8 



11 



12 



9 



6 



12 



Mississippi, 310-320 N. L. . 



U 



12 



7 



15 



17 



21 



8 



9 



17 



10 



5 



14 



14 



18 



10 



12 



N.E. La. & Miss., 330-340 N. L. 



14 



12 



8 



13 



23 



14 



6 



10 



23 



9 



11 



16 



20 



5 



3 



13 



S. E. Louisiana 



8 



9 



15 



20 



15 



18 



9 



8 



15 



20 



16 



10 



10 



8 



7 



14 



In this region a high pressure "is to be found the whole year round, though the 

 different subdivisions participate in it in a somewhat different degree, according 

 to the seasons. It will be seen by reference to the isobar chart that the indraught 

 towards the interior of the continent is so great in summer that the isobar of thirty 

 inches remains east of the mouth of the Mississippi in this season and has even a 

 more southerly position than in the winter, thus showing the great influence of the 

 American continent on the pressure, as it was said before that generally the belt 

 of highest pressure had a more northward position on the ocean in summer. 



In the autumn, on the contrary, the isobar of 30 inches is found between 30°-35° 

 L. N., while the interior of the continent has not yet regained the high pressure of 

 winter, though the indraught has already ceased. At this season, as already 

 remarked, about the southern Atlantic States, there is a nearer approach to the 

 condition of the trade-wind region than at other times of the year. In Florida, 

 as also in Alabama, Mississippi and Louisiana, the winds are decidedly north- 

 easterly as far as 33° N. L. The air is drawn in towards the rainy belt of Mexico 

 and Central America. 



