428 



EEPOET — 1888. 



As the above records wei'e obtained from instruments, anyiesnlts they 

 may yield are probably more trustworthy than those obtained from any 

 tables which have been previously published. The greatest number of 

 earthquakes have occurred between 8 and 9 p.m. and 9 and 10 A.M., while 

 the fewest have been recorded between 11 and 12 a.m. and 8 and 9 a.m. 



Between 6 p.m. and 6 a.m. 351 earthquakes were recorded, while dur- 

 ing the day, that is from 6 A.M. to 6 P.M., 307 were noted. 



The hours at which earthquakes have been most frequent in succes- 

 sive months are in nearly all cases quite different. 



(h) Severe Earth (juaJces. — The following are the most severe eartl.- 

 quakes felt in Tokio in successive years : — 



As Palmieri's instrument is only graduated to 25°, two of the above 

 measurements were estimated. On October 15, 1884, a few walls were 

 cracked in Tokio, several brick chimneys fell, tiles were dislodged, a few 

 storehouses fell, and much furniture was damaged. On February 22, 1880, 

 there was similar damage in Tokio. 



The following is an abstract of notes on these and other earthquakes, 

 which I drew up for the consideration of a committee now sitting in 

 Tokio to consider the question of construction in earthquake countries. 



February 22, 1880.' — This earthquake created considerable destruc- 

 tion in Yokohama. At that place very many brick chimneys fell. At 

 many houses the tiles on the roof were shaken loose, while several were 



' Trans. Seis. Soc. vol. i., part 2. 



