SERIES B. ZONE 10. L A T. 40° TO 45° N. 



275 



(Nos. Y8 to 80.) 







Northern lowa.- 



-Continued. 



















Relative Prevai,e]soe of 



"Winds peom thk 







Monsoon 







DiPPJCKENT PoiB 



TS OP THE Compass. 





^0 



influences. 





H 





W 





.^ 





i^' 









Place and 



Time of 





iji 





o^ 





^Ji 





^■a 



• 



Direction of 



u'o 







kind of 



the year. 





t,^ 





£i . 









c^ 



I-3 



resultant. 



SB 



Direction. 





obaervationB. 





A 



^ 





w 



tn-S 



CO 



il 



^ 

 ^ 



fit 



e'i 





W*" 





& 





January 



41 



15 



10 



28 



30 



75 



27 



193 



1 













February 



26 



15 



20 



45 



35 



51 



26 



167 

















March 



69 



24 



46 



73 



27 



55 



26 



163 

















April 



31 



91 



37 



36 



9 



49 



33 



136 

















May 



69 



49 



46 



81 



19 



42 



27 



90 



2 













June 



33 



28 



16 



30 



57 



61 



14 



52 

















July 



32 



35 



6 



31 



45 



102 



11 



39 



2 











78. 



August 



33 



47 



33 



71 



98 



60 



43 



49 















Fort 



September 



33 



25 



11 



52 



59 



106 



17 



93 















Dodge.' 



October 



25 



46 



11 



56 



65 



88 



31 



87 

















November 



31 



50 



27 



20 



54 



42 



19 



142 

















December 



35 



36 



28 



47 



25 



52 



33 



168 

















Spring 



169 



164 



129 



190 



55 



146 



86 



389 



2 



N. 17°38'W. 



21 









Slimmer 



98 



110 



54 



132 



200 



223 



68 



140 



2 



S. 29 28 W. 



20 









A utumn 



89 



121 



49 



128 



178 



236 



67 



322 







S. 82 1 W. 



20 









Winter 



102 



66 



58 



120 



90 



178 



86 



518 







N. 60 41 W. 



37 









The years 





















N. 75- 8 W. 



.17* 







m 



to C 



Spring 



44 



17 



'"s 



"42 



"55 



"15 



13 



81 





N. 60 W. 



.131 







■« "• 



^ a 



Summer 



64 



12 



14 



108 



125 



37 



18 



81 





S. 1 31 W. 



.212 







E -n 



° 'S , 



Autumn 



61 



15 



23 



85 



162 



25 



37 



125 





S. 31 44 W. 



175 









a 1 



Winter 



52 



32 



13 



64 



48 



23 



27 



98 





N. 42 39 W. 



.129 







-O TJ 



^ 



The year« 





















S. 56 3 W. 



.090 







l| 





Spring 



366 



"96 



"18 



433 



427 



125 



135 



1101 





N. 57 21 W. 



.268 







•- . 



Summer 



311 



50 



132 



921 



663 



288 



83 



607 





S. 7 53 E. 



.243 







-5 ^ ■ 



■ M ■ 



Autumn 



468 



157 



349 



801 



2045 



236 



560 



1944 





S. 52 31 W. 



.205 







a m 



29 



Winter 



369 



537 



146 



522 



321 



233 



333 



1315 





N. 32 54 W. 



.255 







1 i 



The year" 





















N. 84 17 W. 



.139 







o P^ 



a C 



Spring 



8'.32 



5.65 



2.25 



1031 



7.76 



8.'33 



lo'.'38 



130.9 













•2 S 



'" J3 



Summer 



4.86 



4,17 



9.43 



8.53 



5.30 



7.78 



4.61 



75.0 













s5 



'3 ci, . 



Autumn 



7.67 



10.47 



15.17 



9.42 



12.62 



9.44 



15.14 



15.55 













cQ n 



d .2 



Wiuter 



7.10 



16.78 



11.23 



8.16 



6.69 



10.13 



12.33 



13.42 













S 



.sl 



The year 





























, 





Spring 



658 



720 



494 



1172 



624 



617 



473 



2067 



229 



N. 37 8 W. 



.13 







s 



g m 



Summer 



455 



455 



381 



1631 



1349 



1013 



507 



1231 



698 



S. 8 36 W. 



.201 







1 ^ 



V a ■ 



Autumn 



489 



418 



301 



1320 



1444 



1110 



723 



2601 338 



S. 73 29 W. 



.22" 







■« p 



r^'? 



Winter 



514 



508 



243 



1130 



960 



921 



756 



2649 198 



N. 79 51 W. 



.24 









U2 *^ 



The years 

















... j .. 



S. 78 8 W. 



.14 







o3 S 





Spring 



130 



131 



"69 



260 



188 



308 



474 



648, .. 



N. 83 32 W. 



.37 







a!H 



flrS 



Summer 



127 



92 



58 



343 



342 



330 



558 



413! .. 



S. 65 3 W. 



.35 







«2^ 



.2 !=t 



Autumn 



115 



100 



48 



259 



311 



354 



512 



747 .. 



N. 89 24 W. 



•40J- 









S " 



Winter 



91 



138 



36 



244 



224 



251 



467 



614 .. 



N. 87 26 W. 



■m 







S,2 



r=i (,_, 



The yeai« 









... 











S. 88 23 W. 



.3^ 







fcfl n 



to - 



Spring 



788 



851 



563 



1432 



812 



925 



947 



2715 229 



N. 57 32 W. 



.17 



N. 22° E. 



.13 



ai'-g 



Summer 



582 



547 



439 



1974 



1691 



1343 



1065 



1644 698 



S. 26 47 W. 



.21 



S. 31 E. 



.181 



.^> 



o |S ■ 



Autumn 



604 



518 



349 



1579 



1755 



1464 



1235 



3348 338 



S. 78 32 W. 



.26 



S. 67} W. 



.07 





s a 



Winter 



605 



646 



279 



1374 



1184 



1172 



1223 



3263 19S 



N. 81 45 W. 



.27 



N. 49 W. 



.10 



c» 





The year' 

















... .. 



S. 81 41 W. 



.19 







' Surface winds and motion of clou 



ds combined 



in A; 



)ril and May, 1867, and January, 1868. 



2 From this table we obtain tbe fol 



owing sumn 



ary 



results : — 





Spring. 



Summer. 



Autumn 



. Winter. 



The year. 



Average velocity of all winds in mil 



es per hour 







9.82 



6.66 



12.31 



10.58 



9.84 



Velocity in mean direction, on the s 



upposition t 



hat tl 



le winds 













from every point of the compass 



move with 



the f 



oregoing 













average velocity 









1.29 



1.41 



2.15 



1.36 



.89 



True velocity in mean direction, giv 



ng to the w 



inds f 



rom the 













several points of the compass each 



their own av 



erage 



velocity, 













as shown in the table above . 









2.63 



1.62 



2.52 



2.70 



1.37 



Excess of the latter over the former 









+1.34 



+ .21 



+.37 



+ 1.34 



+ .48 



3 Computed from the resultants for 



the seasons. 







