2 E.. Loomis-—Results from an examination of the 
The average course of the storms in 1874 was four degrees 
more northerly than for the two preceding years, and the 
average velocity was 13 miles per hour greater; but the 
change both in the direction and velocity depending upon 
the season of the year was similar to that before noticed. 
According to the combined results derived from the three 
years observations, the course of storms is most southerly in 
July, and most northerly in April and October, the mean 
difference between the extreme months amounting to 25° 
The velocity of progress is greatest in February, and least in 
August, the former exceeding the latter by 74 per cent. In ~ 
only one instance was the course of a storm for an entire day 
directed toward a point west of north. This occurred on the — 
18th of April, in the case of a storm which originated in the 
Gulf of Mexico, and whose course for one day was 13° west — 
of north. The most southerly direction for the year occurred 
in the case of the storm of Aug. 21st, whose course for one 
day was N. ° E., or S. 17° E., a directional most exactly 
per hour; and the least velocity occurred Aug. 2st, being 
228 miles in 24 hours, or 9°5 miles per hour. ; 
ese are the results derived from observations made at — 
intervals of 24 hours. If. we make the comparison at intervals 
of eight hours, we shall find much greater variations in respect 
to both direction and velocity. According to the monthly — 
maps, published under the direction of the Chief Signal Officer, - 
from the 7th to the 11th of May, 1874, the path of a storm — 
center situated about 300 miles west 
Ww 
those below 1, 2, 8, indicate respeck 
| ively the 7.85 a. M., 4.35 P.M. and 
ll P. M. observations It will & 
erceived that the direction of th? 
storm’s progress changed more than 180° in 24 hours, amt 
on the morning of the 11th the center of the storm was distal! 
less than 100 miles from its position on the morning of the 9th 
If, then, we regard the actual motion of the storm’s center from 
hour to hour, as remarked in my former article, we find that the 
storm path may have any direction whatever, and the velocity 
of progress may vary from 15 miles per hour toward the west 
to 60 miles per hour toward the east. 
