[klotz] 



EARTHQUAKE WAVES 



53 



This preliminary investigation is an earnest of a line of investiga- 

 tion it is contemplated following up, and it is hoped future communi- 

 cations to The Royal Society will throw more light on the constitution 

 of the interior of the earth as manifested by seismic waves. 



The accompanying illustration is explained by its sub-title. 



^m\lY}l'-w/^V^^ 



W component. Ottawa. 



Earthquake September 6-7, 1915. S wave 



1. Synthesis of components 1 to 5. 



2. Synthesis of components 1 to 10. 



3. Synthesis of components 1 to 15. 



4. Synthesis of components 1 to 20. 



5. Synthesis of components 1 to 25. 



6. Synthesis of harmonic components 1 to 30 inclusive 



7. Enlargement of original record from seismogram. 



