SERIES B. ZONE 23. LAT. 20° TO 25° S. 

 Rio Janeiro, Brazil. 



587 



(No. 18.) 



Computed from observations made by Charles Darwin for 68 days, in 1832, by Commodore Wilkes 

 for 46 days, in 1838 and 1839, and by Burmeister for 48 days, in 1850. 



Time of the 



North. 



N. E. 

 or bet. 



East. 



S. E. 

 or bet. 



South. 



S. W. 

 or bet. 



West. 



N. W. 

 or bet. 



Calm 



Direction of 



Katio of re- 

 sultant to 











S. &E. 





S.&W. 





iM.&W. 



orvar. 





sum of winds. 



Spring 



6 



11 







10 



16 



6 



3 



5 



2 



S. 20°21' E.?f 



.20 



Summer 



8 



8 







13 



7 







1 



5 



2 



N. 84 28 E.?? 



.224 



Autumn 



16 



112 



27 



98 



44 



66 



9 



42 



42 



S. 68 38 E.? 



.21 



Winter 



■66 



78 



29 



290 



27 



30 



50 



101 



271 



S. 58 15 E.?? 



.19 



The year" 





















S 62 28 E.? 



.18i 









' Computed from the result 



ants for the seasons. 







(Nos. 19 to 35.) Atlantic Ocean. 



From observations for an aggregate period of 24 years, collected and classified, from the 

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

 Capt. M. F. Maury, Superintendent. 







Relative Prevalence op 



Winds from the Diffekeht Points of 







*J oj 



Monsoo 







Pl.ace of 



Time of the 







THE 



Compass. 















Direction of 



^- 

 "5S 



influences. 



?. 























i 





^ 





^ 



_oj 







observation. 



year. 



. 



fi 



H 





H 





H 





^' 









0"^ 



resultant. 



Direction. 





S 







t 



Z 



h" ^ 



■s 



m 



fi 



*j 



% 



m 



N 



m 



» 



fe 



^ 



fe 



s'i 







IS 





1 











§. 



S 



^ « 



« 



p4 



m 



m 



m 



in 



m 



^ 



^ 



^' 



15 



^ 











k" 





£ 



1 



19. r 



Spring 



33 



39 



111 39 



86 i 34 81 



42 



55 



l-i 



42 



~Ti 



28 



13 



24 



15 



36 



S. 82= 



9'E. 



.29 



S. 23i°W. 



.15 



239 



Lat. 20' 1 



Summer 



47 



58 



121 



80 



78 



27, 37 



23 



40 



15 



52 



17 



15 



7 



20 



16 



9 



N. 66 



E. 



.36 



N. 17i W. 



.05 



221 



to 25° S., i 



Autumn 



37 



39 



111 



82 



90 



33 



58 



31 



49 



27 



27 



20 



22 



6 



12 



6 



20 



N. 83 



44 E. 



.40 



S. 43-^ E. 



.07i 



224 



Ions;. 40° 



Winter 



62 



47 



127 



56 



74 



35 



43 



15 



16 



10 



25 



10 



24 



9 



11 



20 



13 



N. 57 



32 E. 



.44 



N. 10 E. 



.14 



199 



to 45° W. L 



The year' 





































N. 74 



33 E. 



.36 







883 



20. f 



Spring 



10 



17 



28 



"5 



'7 



ii 



i'4 



5 



10 



i6 



4 



"4 



5 



"4 



"7 



"e 



"3 



N. 71 



23 E. 



.23 



S."'l8AW. 



.28i 



52 



Lat. 23° 



Summer 



13 



22 



51 



6 



8 



1 



7 



4 



4 



4 



2 







1 



2 



6 



2 



N. 45 



39 E.? 



.61 



N. 57' E. 



.16 



44 



to 25° S., \ 



Autumn 



15 



27 



12 



8 



6 



1 



8 



5 



2 



3 



5 



3 



4 







2 



2 



ON. 38 



E.? 



.43 



S. 84 W. 



.04 



34 



loug. 37° 



Winter 



27 



50 



27 



16 



4 



6 



7 



1 



4 







3 







3 



6 



12 



2 



3 N. 29 



17 E. 



.62 



N. 1 W. 



.20 



57 



to 39° W. [ 



The year' 







... 





























... N. 41 



33 E. 



.46 







187 



21. r 



Spring 



18 



i'2 



15 



"6 



io 



6 



35 



io 



27 



13 



18 



"4 



"7 



"5 



"8 



io 



lis. 36 



2 E. 



.18 



S. 38 W. 



.35 



68 



Lat. 21° 1 



Summer 



16 



8 



31 



11 



9 



19 



16 



14 



13 



4 



6 



1 







3 



6 



3 



IN. 85 



37 E. 



.40 



N. 40^ W. 



.13 



54 



to 23° S., .1 



Autumn 



14 



28 



29 



14 



10 



12 



16 



11 



5 



8 



14 



2 



1 







2 



3 



2 N. 72 



E. 



.38 



S. 74i E. 



.05 



57 



long. 37° 1 



Winter 



38 



48 



60 



24 



6 



12 



7 



10 



6 



1 











1 







15 



17 



3,N. 37 



4 E. 



.64 



N. 10" E. 



.39 



78 



to 39° W. [ 



The yeari 



































... N. 67 



40 E. 



.34 







257 



22. r 



Spring 



120 



94 



160 



57 



104 



91 



106 



70 



87 



48 



85 



22 



56 



21 



48 



43 



8!n. 79 



39 E. 



.22 



S."39'i W. 



.27' 



407 



Lal. 20° 



Summer 



130 



99 



153 



64 



83 



43 



111 



28 



74 



33 



44 



11 



20 



4 



23 



20 



UN. 67 



43 E. 



.36 



S. 9' E. 



.04 



317 



to 25° S., i 



Autumn 



107 



142 



182 



80 



118 



69 



110 



61 



59 



39 



67 



18 



16 



11 



29 



26 



14 N. 71 



19 E. 



.37 



S. 23 E. 



.06 



383 



long. 35° 



Winter 



114 



138 



244 



53 



69 



47 



47 



22 



25 



6 



13 



11 



6 



6 



39 



27 



12 N. 43 



41 E. 



.59 



N. 18ji E. 



.27 



293 



to 40° W. 1. 

 23. r 



The year' 

 Spring 



29 



17 



15 



"s 



14 



15 



15 



17 



24 



"s 



24 



"2 



5 



"6 



"2 



"4 



... N. 61 

 2S. 65 



49 E. 

 57 E. 



.37 

 .22 





.33 



1400 

 67 



S.""2"e. 



Lat. 21° 1 



Summer 



12 



12 



35 



21 



18 



13 



14 



14 







2 



3 















2 



5 



2:n. 71 



3 E. 



.61 



N. 78 E. 



.17 



51 



to 23° S., .j 



Autumn 



41 



38 



70 



29 



12 



15 



39 



20 



11 







14 



1 



1 



5 



3 



3 



2:n. 61 



57 E. 



.49 



N. 27 E. 



.07 



101 



long. 34° 1 



Winter 



19 



32 



42 



11 



8 



19 



13 



8 



1 



6 







3 



2 







8 



6 



IJN. 50 



20 E. 



.54 



N. llj E. 



.18 



60 



to 37° W. 1 



The year' 



































...IN. 67 



4 E. 



.44 







279 



24. r 



Spring 



28 



22 



i'i 



"7 



"s 



1 



"9 



12 



26 



9 



4 



3 



12 



"2 



"4 



"3 



7iN. 45 



8 E. 



.14 



S."33 "w. 



.37 



54 



Lat. 23° 



Summer 



27 



31 



35 



11 



6 



3 



9 







1 







2 







1 







4 



10 



N. 31 



21 E.? 



.72 



N. 21 E. 



.21 



47 



to 25° S., ■ 



Autumn 



12 



21 



49 



19 



15 



6 



16 



10 



8 



4 



8 







1 







2 



6 



ON. 64 



29 E. 



.53 



S. 43 E. 



.26 



59 



long. 34° 



Winter 



21 



18 



24 



4 



2 



1 







1 











2 



1 











3 



9 



N. 19 



52 E.? 



.78 



N. 5^W. 



.39 



29 



to 37° W. 



The year' 



































...!N. 36 



2 E. 



.51 







189 



25. '■ 



Spring 



163 



93 



lie 



76 



135 



73 



103 



46 



62 



20 



44 



1 



26 



12 



50 



55 



52 N. 60 



32 E. 



.35 



s. "Vei'w. 



.19 



376 



Lat. 20° 



Summer 



98 



38 



115 



71 



185 



112 



187 



39 



53 



19 



15 



11 



27 



12 



30 



34 



33 N. 89 



45 E. 



.46 



S. 21 i E. 



.18 



360 



to 25° S., . 



Autumn 



107 



79 



132 



55 



94 



50 



95 



43 



29 



12 



20 



2 



21 



12 



20 



26 



10 N. 64 



8 E. 



.44 



N. 23 W. 



.03 



269 



long. 30° 



Winter 



154 



151 



182 



96 



164 



99 



103 



27 



24 



8 



6 



8 



11 



7 



35 



44 



29, N. 56 



51 E. 



.56 



N. 23 E. 



.14^ 



383 



to df.-^ w. 



The yeari 

 Spring 







^_ 





























...|N. 67 



33 E. 



.44 







1388 



26. ■ 



19 



14 



13 



20 



24 



18 



20 



12 



i'4 



"0 



'7 



'2 



5 



"7 



6 



6 



2 N. 82 



4 E. 



.36 



S."66"'w. 



.16 



63 



Lat. 21° 



Summer 



13 



7 



27 



22 



18 



23 



45 



4 



3 



9 



2 



4 



4 



6 



7 



5 



1 N. 89 



49 E. 



.45 



S. A W. 



.10 



67 



to 23° S., . 



Autumn 



6 



9 



10 



22 



21 



13 



28 



7 



. 4 



1 



















4 



11 



3 N. 85 



11 E. 



.57 



S. 53 E. 



.20 



46 



long. 31° 



Winter 



6 



34 



22 



14 



16 



6 



10 



13 



5 



2 



1 



1 







1 



6 



8 



7 N. 57 



32 E. 



.50 



N. ^ W. 



.18 



51 



to 34° W. 



The year' 



































... N. 78 



33 E. 



.46 







227 











■ Comput 



edf 



rom 



the rest 



iltai 



its f 



ortl 



le se 



aso 



as. 







1 



