SILKIES B. ZONE 9. L A T. 45° TO 50° N, 



201 



, (Nos. 45 to 47.) 

 Observed as follows : — 



Central Minnesota. 



Name of statioa. 



Forest City, 

 Fort Ripley, 

 Kandotta, 

 Kouiska, 

 Princeton, 

 St. Cloud, 

 Sauk Centre, 



By whom observed. 



A. C. and H. L. Smith, 



U. S. Army Surgeons, 



Edwin Wliitefleld, 



Thomas M. Young, 



0. E. Garrisou & S. M. Byers, 



0. E. Garrison, 



S. Bloonifleld, 



Agg 

 lea 



negate 

 'th of 



t 



me. 



T 



m^os 



18 



3 



fl 



2 







11 



3 



11 



2 



2 







6 



1859 to 1866 inclusive. 



1849 to 1869 inclusive. 



January and February, 18.')9. ■ 



1869. 



1866 to 1860 inclusive. 



1860, 1861, 1862, 1868 and 1869. 



1868 and 1869. 



45. Fort Ripley. 



me of the 

 year. 



January 

 February 

 March 

 April 



May 

 June 

 July 

 August 

 September 

 October 

 November 

 December 

 Spring 

 Summer 

 Autumn 

 Winter 

 The year2 

 Spring 

 Summer 

 Autumn 

 Winter 

 [ I Tlie year2 

 }' Spring 

 I j Summer 

 I ■ Autumn 



Winter 

 [ ' Tlie year2 

 f ; Spring 

 ( I Summer 

 I Autumn 

 I Winter 



234: 181 

 221: 199 



262 

 309 

 1003 

 627 

 713 

 886 



43 

 32 

 36 

 51 



380 14' 



194 44 



179 210 



305 209 



8.84 

 6.06 

 4.97 

 5.98 



8.65 

 4.89 

 6.77 

 11 



62 



63 



88 



114 



115 



83 



95 



83 



73 



67 



104 



94 



317 



261 



244 



219 



"27 

 15 

 29 

 13 



131 

 63 



112 

 61 



4.85 

 4.20 

 3. 



4.69 



164 413 

 185! 444 



130 

 120 

 169 

 221 

 285 

 249 

 281 

 187 

 189 

 192 

 419 

 755 

 657 

 541 



13 

 23 

 38 

 20 



"7c 

 210 

 240 

 195 



5.85 

 9.13 

 6.32 

 9.75 



329 

 250 

 300 

 370 

 391 

 510 

 460 

 380 

 433 

 4' 

 8' 

 1271 

 1273 

 1335 



"23 

 38 

 70 

 31 



is6 



233 

 492 

 159 



8.09 

 6.13 

 7.03 

 5.13 



^S 



12' 

 129 

 99 

 132 

 127 

 136 

 162 

 163 

 190 

 160 

 155 

 187 

 358 

 461 

 505 

 443 



13 

 15 

 46 

 30 



"86 

 120 

 320 

 151 



6.62 

 8.00 

 6.96 

 5.03 



252 267 



526 518 

 492j 263 



5.81113.69 

 5.131 9.91 

 7.4lill.26 

 6.65! 6.92 



N. 17° 

 S. 17 

 S. 57 

 S. 83 

 S. 70 

 N. 36 

 S. 46 

 S. 56 

 N. 72 

 N. 83 

 N. 34 

 S. 36 

 S. 74 

 N. 61 

 N. 70 



55' W. 

 37 W. 

 16 W. 

 14 W, 



2 W. 



2 W. 

 31 W, 

 14 W. 

 59 W, 

 42 W, 



27 W. 

 2 W, 



28 W, 

 47 W, 

 53 W 



N. 17i°E. 

 S. 18 E. 

 S. 37 W. 

 N. 70J- W. 



N. 19 E. 



S. 42 B. 



S. 3 E. 



N. 62 W. 



.14 

 11 



05 

 .04i 



.13 



.11 

 .10 

 .18 



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



Average velocity of all winds in miles per hour 



Velocity in mean direction, on the supposition that the winds 

 from every point of tlie compass move with the foregoing 

 average velocity ......... 



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

 point of the compass each their own average velocity, as 

 shown in the table above ....... 



Excess of the latter over the former ...... 



Spring. 



8.14 

 1.44 



2.35 

 +.91 



.74 

 + .10 



7.08 

 1.16 



1.68 

 + .52 



Winter. iTheyear. 



6.65 

 1.79 



1.57 

 —.22 



7.08 

 1.01 



1.26 

 +.25 



2 Computed from the resultants for the seasons. 



26 Novemtjer, 1874. 



