SERIES B. ZONE 9. LAT. 45° TO 50° N. 



199 



(Nos. 41 and 42.) 

 Observed as follows :- 



North-western Minnesota. 







Aggregate 











Place of observation. 



By whom observed. 



length of 

 time. 



Date. 









Pembina, 



Charles Cavileer, 



yrs. mos. 

 9 



1851, 1852 and 1S53. 







Red Lake, 



Rev. E. W. Carver, 



1 3 



1853 and 1854. 









St. Joseph's, 



0. A. Kellum, 



11 



1854 and 1855. 









White Earth Reservation, 



P. Pyle, 



4 



1869. 













Relative Prevalence op Winds fkom the 









Monsoon 









Different Points of the Compass. 









influences. 







H 





s4 





,fe 





.& 











Kind of 



Time of the 





i^ 





iJi 





%ii 





%» 



■ 



Direc 



ion of 



S^o 









<*- 



observations. 



year. 





S^ 





i.m 





gm 





o^ 



uZ 



resultant. 



oB 



Direction. 





« 







g 



WSi 



^ 



° a 



si 



^ S 



+5 



^2 



SS 







■^ o 







t 



s 







Z 



^B 



W 



mi 



m 



73 .C 



^ 



'it 



o 







m' 







w 



s 



-_ 



L.i 



r Red ( 

 Lake \ 



Winter 



11 



6 



9 



10 



55 



18 



26 



22 





S. 37° 



41' W. 



.361 











s 



° s , 



St. 1 

 Joseph 1 



L ^ 



Spring 



73 



2S 



34 



6 



74 



? 



26 



4 





N. 59 



14 E. 



.124 











■-I 





Summer 



19 



4 



21 



3 



98 



1 



53 



13 





S. 27 



54 W. 



.306 











"2 



Winter 



129 



12 



16 



11 



76 



20 



52 



65 





JN. 43 



2 W. .277 













"" » 



r Red f 

 Lake \ 



Winter 



118 



13 



64 



58 



434 



98 



190 



245 





S. 52 



38 W. 













s 



d ^ 1 



St. J 

 Joseph 1 



Spring 



724 



22.') 



216 



16 



698 



? 



331 



35 





N. 8 



47 E. 



.09 













a 3 



Sutnmer 



119 



30 



115 



43 



690 



4 



474 



194 





S. 45 



6 W. 



.38 















Winter 



IfiOl 



118 



77 



40 



510 



66 



534 



578 





N. 35 



22 W. 



.49 











5 



a. . 

 ^0 



r 



Red / 

 Lake \ 



Winter 



10.73 



3.00 



7.11 



5.80 



7.89 



5.44 



7.31 



11.13 





















g p. 



«t f 



Spring 



9.92 



8.04 



6.35 



2.67 



9.43 



? 



12.73 



8.75 



















^ 



si 



Joseph j 



Summer 

 Winter 



6.26 

 12.41 



7.50 

 9.83 



5.48 

 4.81 



14.33 

 3.64 



7.04 

 6.71 



4.00 

 3.30 



8.94 

 10.27 



14.92 

 8.89 





















r r 



Spring 



100 



76 



58 



24 



140 



28 



64 



70 



95 



N. 9 



50 W. 



.04 



N. 49° E. 



.14i 





a 



Surface 



Summer 



fiO 



12 



42 



16 



172 



27 



96 



28 



60 



S. 32 



38 W. 



.26t^ 



S. 10 W.'.17 







Autumn 



77 



44 



23 



47 



121 



31 



43 



97 



16 



N. 89 



19 W. 



.09 



N. 18 E. ;.06 





iS 





Winter 



168 



21 



35 



33 



251 



50 



127 



1.35 



76 



S. 80 



21 W. 



.21 



N. 79 W.'.09 









The year2 





















S. 64 



22 W. 



.12i 











a *' 





Summer 

 Autumn 



4 

 30 





 13 







3 



6 



3 



2 







S. 72 



17 W. 



44 









31 



£ '3 



Motion of J 

 clouds. 1 



3 



14 



15 



16 



14 



62 







N. 45 



10 W. 



.40 









91 



^"rf 



Winter 

 Spring 



50 



ino 



9 

 76 



24 



17 

 24 



22 



9 



17 



35 







N. 8 



1 W. 



V,'U 









180 



bno 





58 



140 



28 



64 



70 



95 



N. 9 



50 W. 



.04 



N. 59 E. 



.13 





^^ 



The two : Summer 



64 



12 



42 



17 



175 



33 



99 



30 



60 



S. 34 



47 W. 



.26^ 



S. 6 



W. .20 





c-i ss 



preceding i Autumn 



107 



57 



26 



61 



136 



47 



57 



159 



16 



N. 63 



5 W. 



.16 



N. 15 W. .10 







combined. Winter 



218 



30 



59 



50 



273 



59 



144 



170 



76 



N. 87 



11 W. 



.17> 



N. 58 



W...07 







L [ The year2 





















S. 78 



14 W. 



.12 





1 





' From this table we obtain the following summary of results : — ' | 





Spring. 



Summer. 



Winter. 



Average velocity of all winds at Red Lake in miles per hour ..... 













7.95 







Velocity iu mean direction on the supposition that the winds from all points of the 











compass move with the foregoing average velocity ...... 



True velocity in mean direction, giving to the winds from the several points of the 























compass each their own average velocity, as shown iu the table above . 













2.57 







Excess of the latter over the former 



Average velocity of all winds at St. Joseph in miles per hour 















9.16 





7.87 



9.04 



Velocity in mean direction on the supposition that the winds from all points of the 













compass move with the foregoing average velocity ..•••• 





1.14 





2.41 



2.50 



True velocity in mean direction, givinf to the winds from the several points of the 













compass each their own average velocity, as shown in the table above . 





0.73 





2.45 



3.27 



Excess of the latter over the former 





—0.41 





f0.04 



+0.77 



^ Computed from the resultants for the seasons. 



