DISTEIBUTION OF EAETHQ [JAKES IN TIME. 259 



quakes which have taken place in comparatively recent 

 times, laying especial stress upon those observations 

 which have been made with the assistance of automatic 

 instruments, or those which have been collected by 

 persons interested in these investigations. 



For this purpose the following table, showing the dis- 

 tribution of earthquakes in different countries during the 

 nineteenth century, has been compiled. 



The arrangement is mensual. Where the number of 

 earthquakes in any month is above the average, the 

 number is printed in large type ; where below the average, 

 in small type. 

 Earthquakes of the Nineteenth Century, chiefly from Perrey. 



ScandinaTia and Iceland . 

 British Isles and Northern 



Isles 



France, Belgium, Holland . 

 Basin of the Rhone . 

 Basin of the Rhine and 



Switzerland 

 Basin of the Danube . 

 Spanish Peninsula 

 Italian Peninsula, Sicily, 



Sardinia, and Malta . 

 Turco-Hellenic Territory, 



Syria, ^gean Islands, and 



Levant . . . . 

 Northern Zone of Asia 

 1876-1881, Japan (Tokio 



area) 



Japan (large earthquakes) 

 Al geriaand North'rn Africa 

 United States and Canada . 

 Java, Sumatra, &c., 1873-4- 



5-7 and 9 . . . . 

 Mexico and Central America 

 Antilles .... 



Cuba 



Chili and La Plata . 

 Peru, Columbia, Basins of 



Amazons, xvi-xis . 

 New Zealand, 1869-79 



Jan. 1850, Dec. 1857 

 Northern Hemisphere , 

 Southern Hemisphere . 



1821-1830 

 Northern Hemisphere . 

 Southern Hemisphere 



17 



11 



9 



9 



27 



17 



12 



12 



15 



17 



14 



15 



10 



/14 



5 

 A/1 



22 



20 



4 



6 



39 



41 





5 



5 



2 



4 



4 



35 



30 



3 



2 



9 



8 



4 



3 



14 



:\ 



92 



31 1 27, 



153 162 



31 se 



48 



11 

 12 



4 



40 



27 106 



23 



161 

 66 



29 33 



1 1 3 



10 



11 12 



17 15 

 4 



21 

 4 

 5 

 6 



27 40 

 2 1 

 16 



2 



15 



94 93 



27 36 



141 156 

 53 39 



1 



3 



24 



1 



12 



6 



16 



97 

 37 



154 



10 



17 



17 



28 



171 

 54 55 



11 



11 



21 



8 



24 



10 



7 



26 



34 



1 

 8 

 7 



30 

 2 



13 

 6 



27 



72 

 27 



151 

 57 



26 

 1 



Ip5 



<J <D 



9-3 



9 



17 

 6-( 



14 



11-i 

 7 



39 



16 

 4-7 



31-4 

 2 



3' 2-5 



121 11-8 



4 4 



8 I 13-9 



168 



34 30 



li 1-1 



87 

 28-5 



15-0 



