184 



EARTHQUAKES. 



Interval 

 between 

 waves in 

 minutes 



22 



15 or 45 



10 



30 



12 to 15 



25 



r-l CM 



CO cc 



o o »o o 



rH rH rH OQ 



li 



w 



.2 ^ — o 



05 O O JO _H 

 C^COCO ^ 



00 



4d ' - * 



<M rH to t' 

 1-i rH 



•Si. 

 .egg 



IP 



.— lb-Ob-b-05C0O-«*'t- 

 CNiOt^kOOOOCOOCClO 

 t^ «0 t-; OO^ O CO__ «5_ O GO 00 



t-T i-T co" CO co" N co' ro' co' oi 



rH 



o 



rH 



b-(MN-00-H»OO0O^ 



cot-otoco>ot-o 



'^ICiy^r-iOOCO rH 



O" 05 lo" to' «>' to' 05 OO' 

 rH 



Velocity 

 in feet 



per 

 second 



OOi-ICO(MOi<r^OOOOrH 

 OSCO-^lOCOt^C^i^OtO 



^(Mcocoeo(Mcoeoco»o 





OtOt-lCOrHOi(M 

 t~-tO(M'*l-^-<*l-*r-l 



Distance from 

 the origin in 

 miles (calcu- 

 lated in great 

 circles) 



OOGO»>>OOOIOOOICOO'*I 

 t-OOOGOO«COC5(Ma5 



oco >-HT*Hio«oa5cc 



to 

 o 



rHCO»0^<Ma)'*IOO 

 rHt^T-Ht^^lO-rhlt- 



cot-;^':qio»oiooot- 

 lata to id taid aC oo" 



its 



^ OiOCOOGOt-COt-COCO 



• co-<^oooNc<ieoco.* 



i-H 



COOOCOC00500000 

 rH U5 rH (M (M CO CO 



■^-sHOiOOOCOOCOlO 

 rHrHrHrHrHt-H(M(M 



Arrival of 



wave in 

 Greenwich 

 mean time 



-•0S000i'-i05t-eC»0OiM<M 



SlO(M (Mr-(<MC<JrHl-tlOlO 



.<MC^t-COfOCOU5»OCO«5fO 

 rC ,-( rH f-i rH T-H 1-1 r-l rH i-l 



^05 OCDOSCSOiOSOiOSOiO 

 tS rH rH 



CO 



o 



(Mb-lC(MGOOi»>.t^ 



rH lO rH <M (N (N CO 



COCOOOb-b-b-C<j-* 



oooooooo 



'So 



COt-ii-H(MCOCO(NCO K5 

 0^(Mt-OOOr-lr-lrHC0t- 



CO 



to 



K5 



CO — rHOC^JOOO 

 ^^rHCOiO'+llOlO 



CDrHCO-rUfMiMOO 







o • 



Origin of wav 

 San Francisco 

 Callao . 

 Iquique . 

 Cobija . 

 Mejiilones 

 Cbanaral 

 Coquimbo 

 Valparaiso . 

 Concepcion 

 Honolulu 





Kahuliu 

 Samoa . 

 Taurauga 

 Wellington 

 Akaroa . 

 Lyttelton 

 Kameishi 

 Hakodate 



