20 =. Loomis— Observations of the U. 8. Signal Service. 
Breckenridge and Florida, and in a difference of 89° 
This was doubtless an important part of the moving force 
which gave the wind such velocity. No d 3 are remark 
Barometric Gradient. 
I have determined the barometric gradient for each of the 
250 cases of high velocity of the wind, and a comparison of 
the results shows that the gradient increases with the latitude 
Latitude 29°-3 Distance 98 miles. 
is% Rive * 
5 ‘a 66 “ 
“ 42 ce “ 62 “ce 
47 J ‘i 50 ot 
The observations also indicate that the gradient is less in 
summer than in winter; but the observations are too few in 
number to furnish a satisfactory value of the gradient in sum- 
mer for these high velocities. 
tude of the stations employed is about 45°. The first part of 
the table is taken from my second paper, page 18. 
