CONTRIBUTIOIfS TO METEOROLOGY. 27 



invariably aceonipaiiies tlu' most violent cyclones. This conclnsion accords with that deduced 

 from the investijiation of tiie West India cyclones. 



39. I next examined all the nuips of the international observations for additional materials 

 showing the course of storms in Sontherii Asia and the adjacent ocjeans. The following are the 

 most important cases which I have found of storms advancing in a westerly direction: 



Table IX. — Asiatic storms advancing westerly. 



Ou Plate XII, Fig. 2, these tracks are delineated, and are designated by the same numbers 

 as in the table. The average direction of progress of these storms in the early part of their 

 course was 27^° north of west, and their average rate of progress was 9 miles per hour. This 

 velocity corresponds closely with that deduced from Table VII, but the direction corresponds more 

 nearly with that found for the West India cyclones. 



40. I ne.xt endeavored to compare this average direction of storm i)aths with the average 

 direction of the wind in the same region. In- the Bay of Bengal and in the China Sea the average 

 direction of the wind is from the northeast in winter and from the soutliwest in summer. In order 

 to make a satisfactory comparison between the average direction of the wind aud that of the 

 progress of storms we must make a separate comparison for the ditf'erent seasons of the year ; and 

 since the winds of the China Sea differ somewhat from those of the Bay of Bengal, I will restrict 

 the comparison to the China Sea, and omit the storuis numbered 3, 4, and 6, which occr.rred in the 

 Bay of Bengal. 



Of the remaining twenty-six storms we perceive that none occurred in the months of De- 

 cember, January, February, and March, and only one occurred in each of the months of April, 

 May, and June. Five occurred in July, four in August, six in Sei)tember, five in October, and 

 three in November. We will therefore restrict the comparison to the five mouths from July to 

 November. The following table is derived from Maury's Pilot Chart of the China Sea, and shows 

 for these months the number of times the wind was observed to blow from the different poiuts of 

 the compass in each of the five degree squares from latitude 10° to latitude 20° N., and longitude 

 110° to longitude 125° E. from Greenwich. 



