8 FE. Loomis— Observations of the U. S. Signal Service. 
between north and west, but occasionally they advance almost 
exactly northward. 
Course of hurricanes originating near the Bay of Bengal, China 
Sea, ete. 
The following table contains various particulars respecting 
those hurricanes in Southern Asia and its vicinity, whose paths 
have been best determined. It includes all those which were 
most carefully investigated by Henry Piddington, together 
with those which have been since investigated by Blanford, El- 
liott and others. Column Ist gives the number of reference ; 
column 2d shows the date of commencement, so far as indicated 
by the published observations; column 8d shows the latitude 
of the storm’s center when it first became violent; column 4th 
shows the average course of the storm while advancing west- 
ward; column 5th shows the velocity of progress in English 
statute miles per hour while moving westward; column 6th 
shows the latitude at which the course of the storm became 
due north; column 7th shows the velocity while moving 
north ; column 8th shows the average course of the storm after 
turning eastward; column 9th shows the hourly velocity of 
progress while moving eastward; column 10th shows whether . 
rain was mentioned as accompanying the storm, and whether 
the rain-fall was violent or not; column 11th indicates the 
J. A. S. stands for Journal of the Asiatic Society of Benyal; 
J.S. for the American Journal of Science; S. D. for Maury’s 
Sailing Directions; the other references are to special reports 
made by the investigators to the Government of Bengal. 
It will be seen that 52 per cent of these cases occurred in the 
months of September, October and November, and 48 per cent 
oceurred in the mouths of April, May and June, leaving only 
5 per cent of the cases for the six remaining months of the 
year. Of the West India hurricanes reported in my fifth paper, 
88 per cent occurred in the months of August, September and 
October, leaving only 12 per cent for the remaining nine 
months of the year: that is, the Asiatic hurricanes occur 1n 
the spring almost as frequently as in the autumn; but the 
_ American hurricanes are almost exclusively confined to the 
period near the autumnal equinox. 
