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



293 



(Nos. in and 118.) 







Michigan. — Continued. 























Eklative Pkevalehce of Winds from thk 















DiFFiSKiiNi^ Points of the (Jompas 



s. 







'5'? 



influences. 





W 





H 





^ 





;^ 









Kind of 



Time of 





c;j 





iJj 





Z-^ 





j:^ 



. 



Direction of 



?'';^ 







obaervations. 



the year. 





S^ 





t-OJ 





S^" 





o^ 



t.3 



resu 



Itant. 



"SE 



Direction. 









t. 



w ji 



"m 



P4S 



j5 



rif. 



■s 



p:^ 



eg 







~ " 





8 







fe 



^B 



W 



ai£ 



to 



!/i-C 



38 



7 



■J 







K 





i^ 



It _ 



O G 



November 



4 







3 



6 



21 



5 





S. 63° 



12' W. 



.494 









. > 



December 



1 



11 



1 



6 



12 



47 



8 



27 





S. 71 



44 W. 



.412 









• 1 

































T! P^ 

































g 

 c3 '^ 





November 



16 







26 



78 



324 



63 



502 



53 





S. 53 



38 W. 



.588 







|a 



December 



24 



2S 



12 



28 



40 



345 



36 



280 





S. 81 



44 W. 



.534 







CO J 



'^'^. 



November 



4.00 



.0 



8.67 



13.00 



15.43 



12.60 



13.21 



7.57 















:-^ C-' 



> lo ■ 



December 



3.43 



2.55 



12.00 



4.67 



3.33 



7.34 



4.50 



10.37 

















Is a J 



r r 



Spring 



137 



203 



159 



139 



80 



365 



203 



326 



139 



N. 75 



36 W. 



.17 



N. 62° E. 



.06 



. 





Summer 



148' 258 



136 



175 



96 



500 



332 



347 



94 



N. 89 



42 W. 



.23 



S. 47 W. 



.02 



O 3 



=r "S ■! 



Autumn 



149 



172 



142 



157 



123 



423 



293 



320 



108|S. 85 



20 W. 



.23', 



S. 26 W. 



.04 



S -s 



(r ^ 1 



Winter 



220 



233 



149 



167 



72 



546 



249 



396 



121 



N. 79 



37 W. 



.23 



N. 31 W. 



.03 



a ts 





Tlie year2 





















N. 85 



41 W. 



.22* 







3 „ 



.2 ^ 



Spring 



1,5 



39 



31 



35 



21 



lu2 



112 



7b 





S. 81 



46 W. 



.36 



S. 50i E. 



.03* 



S"^ 



Summer 



29 



65 



78 



41 



33 



175 



164 



119 





S. 83 



4 W. 



.31^ 



S. 83 E. 



.07 



rt^ 



Autumn 



51 



57 



26 



35 



70 



194 



198 



183 





S. 88 



17 W. 



.46 



N. 78^ W. 



.08 



** o 



S V- 



Winter 

 The year^ 



43 



43 



18 



56 



43 



139 



151 



139 





S. 87 

 S. 85 



58 W. 

 39 W. 



.41 

 .381 



N. 56 W. 



.03 





5P,-" (■ 



Spring 



1.52 



242 



190 



174 



ioi 



467 



315 



401 



139 



N. 83 



17 W. 



.20* 



N. 71 E. 



.05* 







Summer 



177 



323 



214 



216 



129 



675 



496 



466 



94'S. 88 



3 W. 



.25* 



S. 15^ E. 



.02 



rt .^ 





Autumn 



200 



229 



168 



192 



193 



617 



491 



503 



loss. 86 



41 W. 



.30 



S. 57 W. 



.05 





Winter 



263 



276 



167 



223 



115 



685 



400 



535 



121 N. 83 



54 W. 



.27 



N. 19^ W. 



.02 







'I'lie year^ 



















... N. 88 



26 W. 



.26 







' From Ihis table we obtain the folbiwing Runiraaiy 



of results :— 





1 





Autumn. | Winter. 1 



Average velocity of ail winds in niile.s per hour . 









11.93 



6.66 



Velocity in mean direction on the supposition tli.n 



t the winds 



from every point of the 







compass move with the foregoing average velocity 









6.24 



2.74 



True velocity iu mean direction, giving to the winds i 



rnm the sev 



iral points of the 



compass 







each their own average velocity, as shown in the ta 



ble above . 







7.02 



3.56 



Excess of tlie latter over the former 









+ .78 



+ .82 



' Computed from the resultants for the seasons. 



(Nos. 119 to 123.) 

 Observed as follows : — 



Southeastern Michigan. 







Aggregate 





Place of observation. 



By whom observed. 



of time. 



Date. 



Ann Arbor, 



A. Wiuohell & L. Woodruff, 



yrs. .OS, 



1849 to 1856 inclusive.' 



Brest, 



Dr. Thomas Whelpley, 



1 1 



1851 an.l 1854. 



Brooklyn, 



Dr. M. K. Taylor, 



1 2 



1852, 1853 and 1854. 



Clinton, 



Elmore Wainwright, 



9 



1851. 



Coldwater, 



N. C. Southworth, 



1 6 



1868 and 1869. 



Dearbornville, 



Post Surgeon at the Arsenal, 



1 7 



1842 and 1843. 



Detroit, 



Rev. George Duifield, 



3 6 



July, 1839, to December, 1842, inclusive. 



Detroit Barracks, 



Post Surgeon, 



8 11 



1840 to 1846 and 1849 to 1851 botli inclusive. 



Flint, 



Dr. D. Clark, 



1 



1854. 



Fort Gratiot, 



Post Surgeon, 



15 5 



1831 to 1836, 1840 to 1846 and 1849 to 1852, all 

 inclusive. 



' Two independent 



series of observations, one ma 



de at Michi 



gan University and the other 3} miles E.S.E. of it. 



