ABOUT THE 20TH OF DECEMBER, 1836. 



137 



in part, be ascribed to errors of observation, to defective gauges, or improper 

 exposure, yet the differences are too considerable and numerous to be wholly- 

 disposed of in this summary way. 



Most of the registers are very defective in not naming the hour when the 

 rain commenced or ceased. Some of the accounts, however, are sufficiently 

 precise; and by comparing all the observations, it is believed that the limits of 

 the rain for any particular instant may be determined with considerable confi- 

 dence. I have drawn upon the accompanying chart a line representing the 

 limit of rain for midnight of the 20th — 21st. The curve representing the 

 western limit corresponds closely to the curve of barometric minimum, but the 

 curve of the eastern limit differs sensibly from it. It will be observed I make 

 no distinction here between rain and snow. At the southern stations only rain 

 fell; at some of the northern only snow; while, at the intermediate points, there 

 fell both rain and snow. Both are probably to be ascribed to the same cause. 



IV. Wind — direction and force. 



The following table shows the direction of the wind at each station of ob- 

 servation. The letters underlined indicate strong winds. A double line indi- 

 cates a gale. At but a few of the stations was the strength of the wind noted. 



Stations. 



December 



18. 



December 19. 



December 20. 



December 91. 





December 



32. 



rt Leavenworth, 

 rt Gibson, 

 rt Snelling, . 

 rt Towson, . 

 >rt Jesup, . . 







S.W. 



N. 

 W. 



s. 



N. 



S.W. 



S.W. 



s. 

 s. 



N. 



S. 



S.E. 

 S. 



S.E. 

 S.E. 



s. 

 s. 

 s. 



S.E. 



N. 

 N. 



N.W. 

 N.W. 



N. 

 N.W. 



N. 

 N.W. 



S.W. 



N. 



N.W. 

 N.W. 

 N.E. 



S.W. 



E 



S.W. 



N.W. 

 N.E. 



s. 



S.E. 

 S.W. 



s. 



s. 





S. 



S.E. 



S.W. 



S. 

 W. 



)rt Crawford, . 

 )rt Des Moines, 







N. 

 N.W. 



N. 

 S.W. 



S. 

 S.E. 



S. 



S.E. 



N.W. 

 N.E. 



N.W. 



N. 



W. 



w. 



W. 

 W. 



N. 



w. 





N. 

 S. 



agusta, . . . 







S.W. 



S.E. 

 S.W. 



S.W. 



S.E. 



S.E. 

 S.W, 



S.E. 



S. 

 S. 



S.E. 



S.E. 



S. 

 S. 



S.E. 



S.E. 



S.W. 

 E. 



sTe. 



W. 



N.W. 



S.W. 



N.E. 

 W. 



S.W. 



S.W. 



S.E 

 W. 



s. 



S.E. 



s. 





s. 



fferson Barracks, 

 . Louis, . . . 



N.W. 

 N.W. 



S.E. 

 S. 



0., (another register) 





S.E. 



Itches, 



E. 



E.by N.E. 

 W. 



s. 



N.E. 

 S 



S. 



S.E. 



N. by N.E. 

 S. 



S. 



N.E. 

 S. 



S.E. 



S. 



STVV.; W. 



; N.W. 



S. 



N. 

 N. 



N. 



N. by N.E. 



N.W. 



W. 



N. 



N.W. 

 W. 



W. 



E. 

 E. 



S.E. 



N. 



S.E. 



I ton Rouge, . 

 )rt Winnebago, 

 3W Orleans, . 







E. by 



S.E. 



S.E. 

 S. 



S. 



)rt Howard, . 

 obile, . . . 



S.E. 



S. 



S.E. 



S.E 



insacola, . . 

 )rt Mitchell, . 

 ncinnati, . . 







N.iE.; N.N.W. 

 N.E. 



N. 



N.E.; N.E.; 

 N. 



N.E. 



N. 



N.N.E.; S.S.E.; 

 S.E.; 



S.E. 

 S.W. 



N.W. N. 



N. 



N. 

 E. 



N.E. 



N. 

 E. 



sxington, . . 







W. 



W.S.W. 





S.W. 



S.E. 

 S. 



S.W. 



N.W. 



S.W. 



S.E. 



S.; 



S.E. 



jringfield, . . 



S.E. 



W. 



S.W. 



s.s.w. 



)rt Brady, . . 







N.E. 

 N.W. 



N.W. 



w. 



N.E. 

 S. 



S.E. 

 S.W. 



S.E. 



S. 



S.E. 



S. 



S.W. 



S.W. 



N.W. 

 W. 





N.E. 



art Machinac, 



N.W. 



N.W. 



W. 



earbornville Arse 



na 



, 



S.W. 



w. 



s:e. 



"ste: 



S.E. 





S.E. 



W. 



w. 



S.W. 





S.E. 



VII. 2 K 



