18 K Loomis — Results derived from a 



, of the 



thirty-one cases there were thirteen ■ 

 two periods, indicating that heavy rain; 



the northern stations than they are at the southern. In two in- 

 stances the center of the rain area apparently moved westward. 

 Thus on the morning of July 16tn. the enter of the rain area was 

 at Marquette, which was more than 500 miles eastward of the 

 center of low pressure ; but in the afternoon the center of the 

 rain area coincided with the center of low pressure ; that is, the 

 center of the rain area moved toward the northwest. So also 

 on the morning of May 1st, the center of the rain area was 

 more than 400 miles eastward of the center of low pressure ; in 

 the afternoon the center of the rain area extended southward; 

 and during the evening it extended toward the southwest. 





Cases of heavy ra 



nco 



it hi 



uing more the 



n eight hours. 



- 



!»,*.- 



— 



>*. 



*■ 



m-» 



Bate. 



*£ 



«-*.. 



Nov. 



vl 



Mt. Washington. 

 Chicago. 

 Norfolk. 

 New York. 



i; 



\fi 



Mt. Washington. 



New York. 

 New London. 









Mar 

 July 1 



-l'o-oo 



Nashville. 



St. Paul.' 

 Marquette. 



Portland, Me. 



v 



\l 



St. Paul.' 

 Burlington. 



13-3 



1-50 



New Orleans. 

 Indianapolis. 



Baltimore. 

 Mt. Washington. 



average direction and force of the wind during these cas 

 vy rain-fall both for the southern and northern statio 

 follows : 



South of latitude 36°. At previ 

 North of latitude 36°. At prev 





a oba. 



N. 75° E. 



S. 69° E. 

 S. 39° E. 



i and southern stations 

 by easterly winds. At 

 3 most prevalent, while 

 i most prevalent. 



We thus see that both at the northei 

 heavy rains are generally accompanied 

 the northern stations southeast winds a 

 at the southern stations northeast wit 

 At the southern stations there are but eleven c 

 east winds are not reported either at date or at the preceding 

 observation. These exceptions are Nos. 4, 10, 18, 20, 25, 28, 

 30, 34, 46, 48 and 50. In four of these cases the force of the 

 wind was reported 0; in two of them it was reported as 



