L^GG 



SEKIYA AND OMOKl. 



(11.) — Jauiuiry lltli, 1888. — A very .small eurtlKjajike. In 

 each ctjiuponeiit on the surface, the maximum amplitude is 0.1 mm. ; 

 while for tVie motion in the pit, it is not greater them .06 mm. The 

 motion seems here to he much more pron(junced on the surface than 

 in the pit. 



(12.) — April 5th, 1888. — A tolerahly severe earthcjuake, in Avhich 

 the amplitude is not very large, hut the viljrations are very (juick. 



The difference of appearance between the surface aud the pit 

 diagrams is striking, the small shtu'p waves whicli exist in the former 

 beini»' mostly flattened in the latter. 



E. \V. ( 'ompoiieut. 



