1842.] A Sixth Memoir on the Law of Storms in India. 713 



It appears from this table that — 



1. If we class the storms according to the monsoons in which they 



occur, we shall find first as to the times of their occurrence. 



N. E. Monsoon ) Tyfoons seem to occur in October and November* 



October to May. ' only. 



S. W. Monsoon ) Tyfoons occur in all the months from June to 



May to October. * October. 



There is thus, we may say, but little chance of a violent storm from 



December to the end of May, as far as our present knowledge extends, 



and the disturbing force of the S. W. Monsoon against the regular 



N. E. trade seems to be a great cause, if not the cause, of these tempests. 



It is true that the N. E. Monsoon, (which is really the trade wind,) is 



considered to be fully established in November, at the surface of the 



earth, but we may suppose that there may be still some disturbing forces 



from the remains of the influences of the S. W. Monsoon acting in the 



higher regions. This sort of vibrating of some of the November storms, 



(VansittarVs and others,) to which I have alluded, may be noticed as 



affording some countenance to this view of the subject. 



Considering these tables as to the probable tracks of the storms in 



the different months, we have the following results : — 



Average of Tracks. 



June. ... No. XI. From East to West. From East. 



/ „ I. . N. 68° E. to S. 68° W. \ 



) „ XXIII. S. 34° E. to N.34 W./ F 2 n L betw ? ei1 



July. ... 7 > N. E. and 



J 1 „ XXIX. N. 45° E. to S. 45° W. ( s.E.bE. 



( „ XXX. S. 56° E. to N. 56° W. ) 



No. XIII. East to West. \ 



XIV. S. 78° E. to N. 78° W. / From between 



August.^ fj XIX. East to West. > East and 



M XXI. S. 40° E. to N. 40° W. C S * 40 ° E * 



„ XXIX. S. 78° E. to N. 72° W. ) 



No. III. S. S. E. and E. to W. ) F rom between 



„ IV. N. 77° E. to S. 77° W. > N. 60° E. 



V. N. 60° E. to S. 60° W.) and S ' 10 ° E * 





! 



* At Manilla they are said never to occur after the 30th November, the feast of St. 

 Andrew, the patron saint of that city, which is celebrated with much pomp. 



