312 Dr. C. Ciiree on Deductions from 



Table III. gives the number"* of storms of th( 



three 



classes in each of these groups of years, and the percentage 

 which they form of the total number of storms of the same 

 class in the whole 56 years. 



Table III. 



Class of 

 Storm. 



S max 



. years. 



S min. 



years. 



Number. 



Percentage. 



Number. 



Percentage. 



a 



62 



82 

 112 

 256 



57 

 37 

 29 

 36 



7 



31 



88 



126 



6 

 14 

 23 

 17 



A 



M 



All classes 



We see from Table III. that the numbers of A storms 

 from the two groups of years are comparatively nearly in the 

 proportion one would anticipate from the total numbers ; 

 but the G storms are relatively few in years of S min., and 

 are so numerous in years of S max. as to form considerably 

 more than half of the total from the whole 56 years. 



§ 6. The data on which the assertion was based that the 

 diurnal incidence is different in years of S max. and S min. 

 are presented in Table IV. It gives the number of the 

 storms commencing in the three portions of the day already 

 employed in Tables I. and II., and the percentages these 

 form of the whole number occurring in the 24 hours. 

 Eesults are given for the M storms separately, as well as 

 for all the storms irrespective of size. 



Table IY. 



Group of 

 Years. 



Numbers. 



Percentages. 



Oto 



11 A.M. 



Noon to 

 7 p.m. 



8 to 



11 P.M. 



Oto 



11 A.M. 



Noon to 



7 P.M. 



8 to 



11 P.M. 





All 



M 



All M 



All 



M 



All 



M 



All 



M 



All 



M 



S max 



73 



24 



134 65 



49 



23 



29 



21 



52 



58 



19 



21 



S min 



24 



12 



86 66 



16 



10 



19 



14 



68 



75 



13 



11 



* Omitting three whose times of commencement are not given, owing 

 to imperfect registration at Greenwich. 



