SERIES B. ZONE 10. LAT. 40° TO 45° N. 



271 



(Nos. 69 and 10.) North-western lo-wa. 



Observed at the following places, viz. : — 



Orant City, by Edwin Miller and Mrs. Miller, during the year 1869. 



Lizard, by J. J. Bruce, during the month of February, 1869. 



Onowa, by R. Stebbius, from February to September inclusive, in the year 1864. 



Rolfe, by Oscar J. Strong, for an aggregate period of 22 months, in the years 1868 and 1869. 



Sioux City, by Dr. J. J. Saville, for an aggregate period of 16 months, in the years 1857 and 1858; 

 and by A. J. Millard, from January, 1860, to March, 1863, inclusive, and by U. S. Army Surgeons, 

 during the first 4 months of 1864. 







Kklative Peevalbnce of Winds prom the 











Monsoon 







UiPFEKENT Points op thk Oompass. 









ffl*^ 



influences. 





(4 





w 1 ,e; 





M 









Kind of 



Time of 





iji 





ijj 





S'^ 





M^ 



«■ 



Direct 



on of 



ti 







observations. 



the year. 





S^ 





t-aj 





oOJ 





0^ 



^3 



resultant. 



o^ 



Direction. 









A 



wi 



■s 



° a 



f4S 



J3 

 3 



^'i 



■s 



^1 



si 







5 ^ 





g 







1 



^3 



R 



«iB 



!/l 



. > 



^ 



^B 











K*" 





s 



>> 



V- J- 



Summer 



1 



1 



1 



3 



22 



3 



2 



16 





S. 41° 



16' W. 



.359 







o 





Autumn 



7 



4 



3 



18 



25 



15 







66 





N. 78 



6 W. 



.287 







0-. 



Winter 



'6 







4 



7 



31 



3 



3 



20 





S. 26 



13 W. 



.329 







CO ^ 





Summer 



4 



2 



4 



41 



86 



26 



16 



105 





S. 54 



6 W. 



.323 









■ — I 



Autumn 



87 



61 



26 



119 



148 



139 







758 





N. 55 



5 W. 



.438 









^2 



Winter 



26 







20 



40 



118 



18 



31 



224 





N. 80 



38 W. 



.327 







|.s 





Summer 



4.00 



2.00 



4.00 



13.67 



3.91 



8.67 



8.00 



6.56 















CQ 



> .7) " 



Autumn 



12.43 



15.25 



8.67 



6.61 



5.92 



9.27 



.00 11.48 















g 



^sl [ 



Winter 



S.li? 



.00 



5.00 



5.71 



3.81 



6.00 



10.33 11.20 















, 



Spring 



137 



271 



145 



441 



145 



156 



129 676 



46 



N. 16 



03 W. 



.12 







s 



^ T^ 



Summer 



83 



128 



126 



603 



302 



137 



76 321 



21 



S. 29 



47 E. 



.27 







1 • 



^ 3 



Autumn 



97 



67 



32 



350 



165 



146 



96 517 



16 



S. 88 



37 W. 



.16 







>« a 



3 i 



Winter 



83 



156 



41 



386 



131 



196 



133 713 



9 



S. 54 



29 W. 



.23^ 







O o 



cc 



The year2 





















S. 8 



26 W. 



.11 









§1 1 



Spring 



"31 



"47 



19 



"77 



"23 



"59 



"56 



287 





N. 52 



47 W. 



.41 







a " 



Summer 



43 



41 



38 



176 



79 



185 



131 



199 





S. 60 



4 W. 



.27 







f n 

 p 





Autumn 



44 



15 



60 



105 



29 



31 



33 



124 





N. 7 



29 E. 



.04 







.£ ^ 



l2 1 



Winter 



31 



14 



3 



32 



24 



45 



42 



211 





N. 59 



14 W. 



.54 









° L 



The year2 





















N. 67 



29 W. 



.28 







S ° 



a-^ r 



Spring 



168 



318 



164 



518 



168 



215 



185 



963 



46 



N. 34 



9 W. 



.17 



N. 7i°E. 



.12i 



tjjo'-5 



T3 a 



Summer 



126 



169 



164 



779 



381 



322 



207 



520 



21s. 3 



21 E. 



■20A 



S. 29 E. 



.25 



<! ^ 



S IS i ! Autumn 



141 



82 



92 



455 



194 



177 



129 



641 



16 N. 87 



15 W. 



.12 



S. 36 W. 



.OH 





s g 



Winter 



114 



170 



44 



418 



155 



241 



175 



924 



9N. 63 



41 W. 



.26 A 



N. 50i W. 



.16 



g 



l^§ I 



The year^ 



















...'S. 81 



57 W. .Hi 



1 







' From this table we obtain the following summary of resu 



Its:— 







1 





Spring. 



Autumn. 



Winter. 



Average velocity of all winds in miles per hour 







5.80 





9.70 



6.72 



Velocity in mean direction, on the supposition that the wine 



s from ever 



y point of 











the compass move witli the foregoing average velocity 







2.08 





2.78 



2.21 



True velocity in mean direction, giving to the winds from th 



e several poi 



nts of the 











compass each their own average velocity, as shown in the 



table above 





1.87 





4.25 



2.20 



Excess of the latter over the former .... 







—.21 



-f 



1.47 



—.01 



" Computed from the resultants for the seasons. 



