E.VUTllgUAKb: MEASUKEMEN'TS IX PIT AXD OX SURFACE. 



279 



(21.) — Tune 1st, 1889.— A very small e:irtli(|iiake. 

 Ill the E. W. and X. S. Ci)Uipoiients ofljoth tlie surface and pit 

 diau'ranis, the niaximuin amplitudes are aliont .Oo mm. and .02 mm 

 respectively. 



(22.) — dime ord, 1(S89. — A very small eai'tli(piake. 

 In the E. W . Component of the l)()th the surface and pit diiiü-rams, 

 the maxinunn am}>Iitude is about .03 mm. 



X. kS. Component. 



(23.) — dune 15th, 1889. — A small earth(juake. 



(24.) — June Kith, 1889.— A small eartlnpinke. 



I']. ^\ . ('omponenl. Uji the smvfiice, the maximimi atii])lilude is 

 not greater than .02 mm., and in the pit if is al)out ,0') mm. 



X. S. Cijmponent. On the surface, the maxinumi amjtlitude is 

 aljout .07 mm., and in the ])it it is aljout 0.1 mm. 



(25.)— June 20tli, 1889.— A smalf earthcpiake. In this case, 

 the amplitude seems to be rather greater in the pit than on the surface. 



