E. Loom is — Cotifi'llm 



J/< frO/'o/ot/t/. 



1<> 



from 100 



Atlantic Ocean, the breadth of the rain-belt may vary 

 or 200 miles to 1500 miles; and the amount oi rain near the 

 central line of the belt may vary from 4 or o inches to less 

 than one-tenth of an inch. 



In order to investigate this subject more fully, I have deter- 

 mined for each of the cases in the table on page 17, the total 

 rain-fall at each of the stations during the period when it was 

 included within the low area under investigation.. The follow- 

 ing table shows 

 stations for No. 



1873, counting only the rain which fell 

 that is, while the barometer was below 30 inches. At Mobile, 

 Montgomery and several other southern stations some rain fell 

 during this period when the barometer was above 30 inches, 

 but this rain is not included in the following table. 

 Haiti-fall from Dec. 1st to Dec. 5th, 1873. 



Bunon. 



Rain 





«.... 



Station. 



»fe 



A]pena 



0-20 Duluth 



0-15 Leavenworth, . 



~ 



P. Dover,... 



0-81 





•00 KasfjK.rt 









•92 





•01 Erie 







Fortlamt.' ... 













['mil llass; 













(,luel,,e 





Buffalo 



til Ft. Benton. .„ 









•26 





00 Ft. Cam,... 









01 



Cairo 1.. 



1-2.-.J Ft. Oil.son,.. 













■<!<_' i-;t. >"lly 











(.'. tW-ior. '.'_'_ 















■On, Craiui Haven 



•41 Nashville. "... 











•01 Halifax 







•08 



<t. l'aui. ::; 





Cheyenne,... 



t Si !;;;|;;;;;;;i;;:^; 









Sydney. . . . 





Chicago. 





New Vork 















Norfolk 









( ev< land . " 



•64 Keokuk, .... 















1-21 Kingston, ... 







•49 







■37 Knoxville,... 





IVnih'iiia.""-.. 





■ 





















•70||Lake City,"" 





Pittsburgh 









The numbers in this table are represented by curves on 

 Plate III, which shows the boundary of the area having a total 

 rain fall of one-tenth of an inch; also the area of a half inch 

 rain-fall— one inch— two inches and three inches. We see that 

 west of the meridian of 98° from Greenwich, the aggregate rain- 

 fall for these five days was less than one-tenth of an Inch ; and 

 as the low center advanced eastward, the rain-fall rapidly in- 

 creased up to 346 inches at Indianapolis; after which it 

 declined with almost equal rapidity, and in longitude 67° 

 became reduced to one-tenth of an inch. The dotted line 

 shows the course of the center of low pressure, its position at 



