222 



EARTHQUAKE PHENOMENA. 



[Sect. VII. 



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nomcna occurring before, during^ or after the earthquake, 

 in adjacent or distant regions, to he recorded. 



Records or trustioorthj traditions are to be sought for 

 in volcanic countries or those neighbonring to them, as to 

 the state of activity or repose of these vents for a long 

 period prior to and during the earthquake ; also as to 

 their state before and during any previous earthquakes 

 all remarkable facts as to which should be collected. 



should 



be transcribed for the times, correlative to the above 

 records. 



Any changes of permanent level of sea and land that 

 accompanied former earthquakes that are on record should 

 be obtained, with their particulars ; whether the same points 

 have been affected in successive eartliquakes, and by suc- 

 cessive upheavals ; whether the same or different volca- 

 noes were in action during successive earthquakes. 



may be advantageously made of the lines of 



Where meteorological or tidal tables exist, thev 



direction through the country in which the shock was 

 simultaneously felt ; coseismal lines : also of the incoming 



directions or cotidal lines of the efreat sea-waves on a 



long coast-line, shov/ing origin where possible. Maps of 



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issures formed in relation to the coseismal lines, and 

 generally sketches of all visible remarkable effects of the 

 earthquake on natural or artificial objects. The effects 

 of earthquakes on the lives of men and animals ; statistics 

 of mortality : modes of entombment by the convulsion, 

 bearing on future organic remains ; burying of objects 



of liuman art ; production of presumed epidemics or 

 pestilences, &c, are all worthy of notice. 



Observers will do well, to consult at least the following 



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