Elastic Waves, with Seismological Applications. 

 (2) Distortional Wave incident in the Granite. 



85 



4>. B. 



B r 



f- 



B'. 



9. A v 



0'. A'. 



0° 1 



•016 





•984 







5° 43' 1 



•014 



7° 



•983 



10° -001 



12° -002 



14° 2' 1 



•004 



18° 



•977 



26° -006 



30° -013 



26° 34' 1 



•009 



35° 



•920 



54° -0002 



65° -071 



29° 48' 1 



•075 



39° 



•793 



62° -132 



90° 



33° 31' 1 



•026 



45° 



•974 



90° 



imaginary. 



45° 1 



•11 



66° 



•890 



imaginary. 



,, 



48° r i 



•145 



74° 



•855 





,, 



49° 43' 1 



1-000 



90° 



0000 



» 



" 



(3) GWdensational-rarefactioual Wave incident in the 

 Slate. 



9. A. 



K 



9. 



A'. 



<P- 



B r 



<p\ 



B'. 



0° 1 



•041 





•959 











14° 2' 1 



•002 



12° 



•992 



9° 



•003 



7° 



•003 



26° 34' 1 



•004 



22° 



•979 



16° 



•008 



12° 



•011 



45° 1 



•003 



32° 



•949 



24° 



•011 



19° 



•037 



59° 2' 1 



004 



50° 



•940 



33° 



•0002 



25° 



•056 



73° 18' 1 



•006 



58° 



•904 



37° 



■004 



28° 



•083 



84° 17' 1 



•247 



62° 



•668 



39° 



•009 



29° 



•077 



87° 17' 1 



•500 



62° 



•441 



39° 



•006 



29° 



•053 



(4) Condensational-rarefactional Wave incident in the 

 Granite. 



0° 



5° 43' 

 14° 2' 

 26° 34' 

 45° 



59° 2' 

 62° 3^' 

 73° 18' 

 84° 17' 

 87° 17' 



A x . 



•041 

 •004 

 •002 

 •043 

 •003 

 •006 

 ■664 

 •813 

 •932 

 •962 



0'. A'. 



•959 

 6° -994 

 16° -991 

 30° -978 

 53° -948 

 75° -890 

 90° 

 imaginary. 



0. 



B v 



<p'. 



B'. 



3° 



•001 



4° 



001 



8° 



•003 



10° 



004 



14° 



•007 



19° 



015 



23° 



•005 



30° 



044 



29° 



•004 



38° 



100 



30° 



•131 



39° 



198 



32° 



•081 



43° 



106 



34° 



•028 



45° 



041 



34° 



•014 



46° 



023 



These four cases are shown graphically in figs. 1, 2, 3, 

 and 4. The curves which refer to the second medium are 

 dotted. 



Undoubtedly the most peculiar are cases (1) and (2). For 

 nearly all incidences in the one case, and for incidences up to 

 the critical angle for complete total reflexion in the other, the 

 refracted distortional wave, B', is by far the most important. 

 Except for a limited region in the vicinity of the angle at 



