and especially in Scotland, 289 



numbers now to be mentioned have occurred in these several 



months — 



Scotland. England. Total. 



January, 14 11 



February, 14 13 }. 74 in threo Winter months. 



March, 12 10 



April, 9 10 



May, 8 4 I 44 in three Spring months. 



4 l44i] 

 9 J 



5 J 



12 I 79 



7 J 



June, 4 



July, 6 5 



August, 12 9 J. 50 in three Summer months. 



September, 12 1 



October, 14 



November, 20 12 J. 79 in three Autumn months. 



December, 15 



139 116 



From this statement, it appears that in Scotland the numbers 

 of shocks during the six summer months, from April to Septem- 

 ber inclusive, was fifty, and in the rest of the year eighty-nine. 

 That, in like manner, in England the numbers of shocks dur- 

 ing the six summer months was fifty-two, and during the six 

 winter months, sixty-four. 



From recent catalogues and classifications of the same kind, 

 constructed by continental writers, these inferences are ve- 

 rified in a very remarkable manner. The results which they 

 have separately arrived at, from registers of earthquake-shocks, 

 ranging over very diff'erent periods of time, may here be stated. 

 In explanation of the folloN'sing table, it requires to be men- 

 tioned that Von Hoff's register* includes earthquake-shocks, 

 and volanic eruptions in all parts of the globe north of the 

 equator, and extends from the year 1821 to 1830 inclusive; 

 that Professor Merian'st catalogue applies only to shocks at 

 Basle, and extends from the 10th to a part of the 19th cen- 

 turies inclusive ; — and that M. Alexis Perreyt of Dijon, has 

 published his catalogue only down to the year 1583, commenc- 

 ing with the year a. d. 306. 



* Annalcn der Physik und Chemie, vol. xxxiv., p. 104. Von Iloflfs re- 

 gister includes some shocks and eruptions on the south side of the equator j 

 but these arc not taken into account in the table in the tgxti 



t Ibid. p. 108. 



\ Comptes licndues, tome xii., p 1 185, 



