DYNAJVIIC METEOROLOGY. 



369 



Loomix's wind mid haromeirir ffrtidicuts on the Xorlh Atlantiv Ocean. 



Isobars. 



"Winds. 



Location. 



Consecu- 

 tive num- 

 bers. 



Distance 



iu degrees 



of gieat. 



circle. 



Gradients 



in n)illi- 



meters 



per 



j degree. 



Cyclones. 

 715-720.... 

 720-725.... 

 725-730.... 

 730-735.... 

 73J-740.... 

 740-745.... 

 745-750.... 

 750-755.... 

 755-760.... 



Anti cy- 

 clones. 



760-765.... 

 765-770.... 

 770-775 .. 

 775-780.... 

 780-785.... 

 785-790.... 



1.20 

 1.29 

 1.35 

 1.39 

 1.42 

 1.45 

 1.48 

 1.54 

 1.61 



1.70 

 1.82 

 1.08 

 2.10 

 2.37 

 2.60 



Mm. 

 4.17 

 3.87 

 3.71 

 3.60 

 3. 52 

 3.45 

 3.37 

 3.24 

 3.10 



2.95 

 2.75 

 2.53 

 2.31 

 2.11 

 1.92 



Wind 



force, 



Beaufort 



scalo. 



Inclina- 

 tion to 

 Tsobai.s. 



Distance to cen- 

 tral pressure. 



53.1 

 49.3 

 45.6 

 42.1 

 'J9. 4 

 37. D 



In ortler to determiue the same quantities also for the storms of the 

 United States, Loomis has chosen thirty-six charts for cych)nes and 

 thirty six for anti-cyclones out of the twelve thousand published by 

 the Sig'ual Office since November, 1871, which gave him the following 

 table of results. The mean latitude of the centers of these cyclones was 

 110.7 north, that of the anticyclones 45o.l north. 



Loomia'a wind and barometric gradients tvithin the United States. 



H. Mis. 142 24 



