SERIES B. ZONE 17. LAT. 5° TO 10° N. 



547 



(Nos. 20 to 24.) Guiana, South America. 



Observed at the following places, and reported, for the most part, to the Smithsonian Institution, 



Gatharina Sophia, Surinam, by 0. J. Hering, from February, 1856, to December, 1858, inclusive. 



Georgetown, British Guiana, by Robert H. Schomburgk, during the years 1850, 1851, 1854, 1855, 

 and 1856. 



Our Village (ne&r Mount Roraima), British Guiana, by Robert H. Schomburgk, from October 29 

 to November 16, nineteen days. 



Bustenberg Plantation, Surinam, by C. J. Hering, from April, 1861. 







Eelative Pkevalence of Winds from the 











Monsoon 







Different Points of the Compass. 











influences. 





H 





H 





M 





•^' 











Place and 



Time of 





i^ 





i.^ 





.S*i 





*jj 



. 



Direction of 



§0 









kind of 

 observations. 



tlie year. 



.G 





2 



£1 . 



J3 



gaj 



1^ 







resultant. 



" 3 



Direction. 



2 







1 



fe^ 



C3 





M 



rrJS 



^ 



fcs 











m" 







i2 



20. ) 



































Our 



Autnmn 



1 



13 



5 



11 







1 



5 



1 



6 



N. 63° 



40' E.??? 



.31 









Village. J 





































Spring 







37 



50 



5 















1 



N. 74 



9 E. 



.90 



N. 



21J°W.i.03 1 



21. 



Summer 







21 



62 



6 











1 



1 2 



N. 82 



27 E. 



.88 



S. 



1 w. 



.10 



George- \ 



Autumn 







29 



59 



3 























N. 77 



19 E. 



.92 



S. 



58i E. 



.02 



town. 



Winter 







37 



51 



1 



















1 



N. 71 



54 E. 



.91 



N. 



8i W. 



.07 





The year 



1 



124 



222 



15 











1 







3 



iN. 76 



26 E. 



.90 









=4 -. 



■ 1 m f 



Spring 



k; 



264 



74 



55 



11 



3 















N. 63 



8 E. 



.788 









.s g 



o g 



Summer 



12 



176 



117 



148 



69 



28 



2 



8 



2 



S. 82 



26 E. 



.583 









5S 



® rf 1 



Autumn 



18 



224 



97 



109 



42 



18 



4 



34 







N. 76 



46 E. 



.549 









? '° 



d ^ 



Winter 



26 



208 



77 



73 



19 



3 



2 



6 







N. 68 



38 E. 



.693 









o g 



«l L 



The year2 





















N. 75 



2E. 



.637 









^5 



r 



Spring 



105 



2689 



466 



327 



"40 



"lO 



"0 









N. 56 



6 E. 



.856 













Summer 



114 



1696 



900 



1006 



192 



161 



4 



50 





N. 82 



53 E. 



.647 









3 ~ ■ 



Autumn 



235 



2677 



814 



705 



183 



167 



45 



227 





N. 62 



13 E. 



.641 









'iS 



|a 



Winter 



153 



2992 



681 



496 



66 



10 



6 



90 





N. 58 



8 E. 



.804 













The yeav2 





















N. 62 



54 E. 



.731 









=2 .9 



^ 'J, C 



Spring 



6.56 



10.19 



6.03 



5.95 



3.64 



3.33 

























3 ci 



% Q. \ 



Summer 



10.36 



9.64 



7.69 



6.80 



3.25 



5.75 



2.00 



6.25 

















"^1 



> m \ 



Autumn 



14.72 



11.95 



8.39 



6.47 



4.36 



9.28 



11.25 



6.68 

















IM 03 



La a L 

 r ^ f 



Winter 



5.88 



14.38 



8.84 



6.79 



3.47 



3.33 



.3.00 



15.00 

















ffl h^ 



Spring 



101 



1125 



750 



358 



60 



29 



5 



16 



3 



N. 71 



55 E. 



.74i 









■•^ hJ) 





Summer 



84 



770 



828 



691 



235 



80 



5 



40 



4 



S. 86 



1 E. 



.65 









II 



'V. a { 



Autumn 



88 



993 



577 



604 



214 



69 



11 



87 







N. 84 



9 E. 



.60 









^ * 



&'^ 



Winter 



114 



980 



696 



374 



78 



14 



6 



15 







N. 74 



1 E. 



.74 









d'^ 





The year2 







... 















N. 80 



23 E. 



.68 









K ^ 



— r 



Spring 



5 



535 



1262 



331 



"13 



"12 



"s 



"5 





N. 7 



59 E. 



.86 









^^ 



o . 



Summer 



10 



414 



1223; 694 



27 



11 



7 



13 





S. 83 



51 E. 



.83 











^31 



Autumn 



18 



280 



987; 671 



46 



22 



8 



34 





S. 79 



36 E. 



.70i 









o "o 



Winter 



22 



429 



1215| 381 



4 



2 



2 



3 





N. 88 



18 E. 



.87i 









hD'J^ 



s L 



The year2 







... 













N. 87 



29 E. 



.83 









<i C3 



60 . r 



Spring 



106 



1660 



2012^ 689 



'73 



41 



13 



21 



"3 



N. 78 



57 E. 



.79^ 



N 



19 E. 



.11 





'3 s 



Summer 



94 



1184 



2051,1385 



262 



91 



12 



53 



4 



S. 84 



52 E. 



•73^ 



S. 



5 W. 



.lU 



■S S 



^ ^ 1 



Autumn 



106 



1273 



15641275 



260 



91 



19 



121 







S. 87 



26 E. 



.68 



S. 



42 W.'.09'l 



=3 3 



i.^ 



Winter 



136 



1409 



1911 755 



82 



16 



8 



18 







N. 81 



22 E. 



.79J 



N. 



23 E. 



.09 



?^o 



Ln " I 



The year2 



















N. 86 



35 E. 



•74 J 









' From this table we ob 



ain the following summary of re 



suits : 



- 







1 





Spring. 



Summer. 



Autum 



n, 1 



;Vinter. 



The year. 



Average velocity of all w 



uds in miles per hour 





8.55 



7.51 





9.31 





10.86 



9.06, 



Velocity iu mean directi 



3n, on the supposition that the 5 



vinds 



















from every point of t 



le compass move with the fore 



going 



















average velocity . 







6.74 



4.38 





5.11 





7.53 



5.77 



True velocity in mean di 



rection, giving to the winds froi 



n the 



















several points of the co 



upass each their own average vel 



Dcity, 



















as shown iu the table a 



bove 





7.32 



4.86 





5.97 





8.73 



6.62 



Excess of the latter over 



the former . . . . . 





+.58 



+.48 





+ .86 



^ 



-1.20 



+.85 



2 Computed from the re 



sultants for the seasons. 



' 











