) E. Loom is — Results fror, 



Ex. \.~Storm ofFeh.5, ISVO, Atlantic Oeean, 



XXI"- 



"S" 



-" 



^^'^sit 



2800 

 29-00 



1020 





^•42 



I have made a similar application of the formula to two vio- 

 lent cyclones of recent occurrence on the coast of the United 

 States, and the results are shown below. In the Punta Rassa 

 cyclone the assumed velocities 90 and 70 miles agree pretty 

 well with the velocities actually observed; the velocities 50 

 and 35 miles are somewhat greater than the observations at the 

 surface of the earth, but may be presumed to have been the 

 velocities at a little elevation above the earth's surface. The 

 velocities assumed for the Indianola cyclone are the velocities 

 actuallv observed or estimated at Indianola. 



Ex.S 



.—Storm of 



Oct. 6, 1873, I>unta Bassa, lat 





Baron^eter. | ^'^^-^ | Velocity. 



^l^^J? 





2900 

 29-50 

 3000 



i \ 



•'i? 



Ex. 



i.— Storm of Sept. 16, 1875, Ind 



ianola, lat. 







«!st- 



velocity. 



^l«?eV'' 





30.00 



i. 



I 



'Z 



The following is an example of a great i 

 sual severity. Column third s' 

 wind observed at any station near the corresponding isobars i 

 column first, and column fourth shows the velocity assumed i 

 computing the gradients in column fifth. 



Ex. i.—Storm of Nov. 18, 1873, New England, lat. 41° 





^t\rsz!- 



Velocity of wind. 



Gnaientu, 



inches. 



Observed, j Assumed. 



'">-'■"■ 



28-60 

 29-00 



3?-S2 



100 

 1200 



i 



I 



.■?5 



