684 



WINDS OF THE GLOBE. 











s.. 



,mor. 











N. 



N. E. 



E. 



S. E. 



S. 



s. w. 



w. 



N. W. 



. J^, 



4 

 1 



10 



11 



0.6 



13 



8 



7 

 12 



29 



12 



19 

 9 



7 

 65 







Thus tlic N. W. wind largely prevails if the number of miles is taken into 

 account. The following is the percentage of winds in California, Oregon, and 

 Nevada. 







Summer. | 

 1 



Winter. 1 





H 









^ 





^ 





(A 





m 





^' 





^ 







>5 



!5 



B 



m 



ay 



M 



^ 



« 



4 



10 



10 

 12 



19 

 7 



16 

 14 



12 

 9 



23 



22 



6 

 9 



a 





7 

 11 



1 



5 



3 

 3 



2 



6 



7 



34 



14 



25 

 14 



21 

 42 



8 

 17 



W. aud S. W. Oregon 









28 



2 



12 



1 



3 

 1 



4 



5 



7 

 21 



n 



19 



12 

 42 



23 



8 



12 

 9 



8 



8 



7 

 15 



14 



10 



19 

 19 



lU 

 14 



11 



15 



14 



9 



California, lat. 39°-40° 



N. . 



California, lat. 38°-39^ 



N. . 



5 



1 



1 



20 



28 



22 



16 



8 



22 



6 



5 



23 



U 



6 



4 



24 



California, lat. 37°-38° 



N. . 



1 







1 



1 



5 



32 



48 



13 



14 



11 



6 



12 



10 



17 



14 



lb 



California, lat. 3G°-3T 



N. . 



6 



3 



1 



2 



4 



22 



34 



27 



13 



4 



1 



3 



!» 



30 



21 



19 



W. Nevada .... 





5 



fl 



8 



9 



« 



17 



37 



10 



8 



19 



11 



8 



7 



19 



21 



V 



N. W. Nevada . . . 





5 



5 



15 



12 



19 



14 



26 



4 



9 



7 



10 



3 



8 



14 



44 



5 







7 

 3 



8 



3 



8 



8 



13 



5 

 10 



5 

 3 



7 



5 



5 



11 



10 

 27 

 14 



38 

 30 

 24 



19 



18 



3 



3 



20 



4 

 15 

 15 



10 



8 

 8 



23 



7 

 13 



1 

 9 



18 

 33 



7 



18 

 15 

 13 



8 

 11 

 15 





S W Idaho .... 





The mean direction of the wind in the four seasons is as follows in the same 

 western region of North America. 



Ilululc, Aleutian Islamls .... 



Fort Wrangel 



Sitka 



N. W. Washington 



S. W. Washington 



S. W. Oregon 



N. W. California 



California, lat. 370-380 ; long. 1210 



-1230 



W. Nevada 



S. 47° W. 



S. (34 E. 



3. 6 W. 



S 9 W. 



S. 79 W. 



N. 76 W. 



N. 50 W. 



S. 76 

 N.S8 



.11 



.48 



.07 



.27^ 



.20 



.30i 



.19' 



.52i 

 •2Ui 



s. 270 W. 



S. 36 E. 

 S. 61 W. 

 S. 32 W. 

 N.79 W. 

 N. 54 W. 

 N. 33 W. 



3. 77 W. 

 S. 81 W. 



24^ 



20 



34 



44 



53.! 



S6 



35 



73 

 34.'. 



Mean 

 direction. 



Ratio of 

 result- 

 ant. 



S. 810 W. 



.22^ 



S. 34 E. 



.03 



S. 41 E. 



.29 



S. 26 E. 



.20 



S. 64 W. 



.19 



West. 



.17 



N. 58 W. 



.22 



S. 75 W. 



.47 



N. 58 W. 



-U 



Ratio of 

 result- 

 ant. 



N. 300 

 N.46 

 N. 88 

 3. 48 

 S. 73 

 S. 35 

 S. 36 



N. 88 

 S. 86 



.06 



.15 



.32J 



.17 



.17 



.12 



.16 



■m 



.10^ 



Thus in summer, westerly winds very largely prevail in this region, while in 

 winter the ratio of resultant is much smaller in California and Oregon, and east- 

 erly winds prevail further north, as shown also by the map, Plate 8. 



The geographical features of the North American continent are such as to 

 exclude a great part of it from the influence of the Pacific Ocean. The mountain- 

 chains are higher in the west than in the east, and, what is more important still, 

 there is a very extensive plateau occupying nearly all the western half of the con- 

 tinent, between 34° and 42° N. L. The eastern part" of this plateau, in eastern 

 Wyoming, Colorado, and New Mexico, and in northwestern Texas slopes gradu- 

 ally towards the east — the valley of the Mississippi — and is thus subjected to the 

 influence of the Gulf of Mexico. This influence is especially felt in summer. 



