SERIES B. ZOKE 21. LAT. 10° TO 15° S. 



513 



SHpplemeiitary Zone.* 



Coast of Brazil. Latitude 9° to 11° South. 



(Nos. 56 to 58.) Atlantic Ocean, longitude 29° to 37° west. 



From observations for an aggregate period of over 2 years, collected and classified, from the 

 logs of numerous sailing vessels, at the United States Naval Observatory, under the direction of 

 Capt. M. F. Maury, Superintendent. 







Relative Prevalence of 



Winds from the Different Points of 





^^ 



Monsoon 



^^ 



Place of ob- 



Time of the 











THE O0MPAS15. 













Direction 



05 



infiueacc 



s. 



I 





























N 













aervatioa. 



ye.ar. 



^■ 



w 





w 





H 





W 





^ 





is 







(S 



oi 



of resultant. 



•3 E 1 Direction. 





g 







■K 



fe 



B 



s 





«) 



W 



in 



■g 



K 



^ 



OQ 



JS 



fe 



^ 



fe 



g.2 









S 



a 







^ 



^ 



S 



w 



H 1 H 



!/i 



aj 



m 



tzj 



m 



^ 



^ 



^ 



13 



^ 



o=" 





« 





1=^ 



k 



56. 



Longitiid« 



W to 



37° W. 



57. r 



Longitude 1 

 32^ to ■» 

 34° W 



Spring 







7 



4 



24 



25 



46 



39 



20 



7 







3 























3 



S. 67° 4'E. 



.79 



S. 45° W. 



.08 



59 



Summer 



U 







S 



5 



10 



39 



59 



9 



6 































4 



S. 58 E.? 



.87 



S. lU w. 



.20 



46 



Autumn 



u 







14 



27 



20 



23 



20 



11 



4 



1 



1 























0[S. 78 47 E.? 



.79 



N. 1 W. 



.11 



40 



Winter 











b 



38 



44 



89 



19 



5 







1 



1 























Ols. 81 50 K.? 



.88 



N. 34 E. 



.10 



49 



The year' 

 Spring 



4 







"3 



24 



58 



57 



61 



19 



1 



"3 



"0 



"0 







6 



"0 



"0 



... !S. 71 25 E. 

 2!S. 63 59 E. 



.82 

 .81 





.09 



194 

 79 



N. 16i W 



Summer 



1 







8 



b 



ti 



4S 



81 



23 



12 































2 IS. 49 51 E. 



.90 



S. 20 W. 



.23 



60 



Autumn 



I 







23 



18 



35 



72 



55 



24 







1 































S. 70 15 E. 



.84 



N. 17 E. 



.09 



76 



Winter 



2 







1 



24 



35 



58 



92 



12 







1 































S. 64 24 E. 



.89 



S. 83 E. 



.05 



75 





The year' 





































S. 63 47 E. 



.85 







290 



5S. f 

 Longitude J 

 29° to 1 

 32° W 



Spring 











U 



9 



24 



56 



90 



50 



i 























6 











S. 52 7 E. 



.92 



S. 41 W. 



.00 



77 



Summer 







I 











4 



60 



110 



60 



7 



































S. 42 41 E. 



.95 



S. 30 W. 



.14 



77 



Autumn 







4 







y 



16 



70 



119 



22 



9 



1 



























1 



S. 53 E. 



,9?, 



N. 42,V E. 



.01 



83 



Winter 











I 



21 



50 



58 



126 



15 



1 



































S. 61 45 E. 



.91 



N. 29^ E. 



.15 



91 





The year' 





































S. 52 33 E. 



.92 







328 













' Comput 



ed from the res 



ilta 



nts for t 



hes 



ease 



)n3. 









ZOI^E No. 21. 

 Latitude 10° to 15° South. 



The data for the study of the winds of this zone consist of observations made at 

 2 stations on land, for an aggregate period of 2 years 8 months ; at sea for 

 over 54 years. The distribution is as follows: — 



Where observed. 



No. of 

 Stations. 



Aggregate length of time. 



Pacific Ocean, 

 Atlantic Ocean, 

 South America, 

 Indian Ocean, 

 Australia, 



1 



nearly 16 years, 

 over 17 years. 

 4 months, 

 over 21 years. 

 2 years 4 months. 



* This form of presenting these observations — in a supplementary zone — was necessitated by their having been 

 presented in groups extending both north and south of the parallel of 10° south latitude. 



