SURFACE REFLEXION OF EARTHQUAKE WAVES. 
379 
a reflected transversal wave differing in phase from the incident wave. Within this 
range the values of A a , A 3 . H and Y are complex, except at the special point e = 45°, 
Table II.—Transversal Wave Incident. 
n = 1788, fx cos e = cos e'. 
Angles Less than the Critical Angle 56°. 
e. 
Mod Ao/A. 
Mod A 3 /A. 
Mod H/A. 
Mod V/A. 
o 
0 
1-0000 
0*0000 
o-oooo 
0-0000 
5 
1-0000 
0-3084 
0-2768 
0-4587 
10 
1-0000 
0-4744 
0-4306 
0-7316 
15 
1-0000 
0-5371 
0-4971 
0-8733 
20 
1-0000 
0•5465 
0-5199 
0-9632 
25 
1-0000 
0-5228 
0-5157 
1-0371 
30 
1■0000 
0-4700 
0•4852 
1-1114 
35 
1-0000 
0-3820 
0-4169 
1-1953 
40 
1-0000 
0-2401 
0-2802 
1-2942 
45 
1-0000 
o-oooo 
o-oooo 
1-4142 
50 
1-0000 
0-4635 
0-6446 
1-5120 
55 
1-0000 
1-5389 
2-3986 
0-3726 
Angles e from 56° to 90°. 
e. 
e!. 
a 2 /a. 
A 3 /A. 
H/A. 
V/A. 
o t 
56 0 
r 
0 
- 1-0000 
+ 2-7685 
- 4-4261 
+ 0-0000 
56 8 
5 
0-4814 
2 ■ 0235 
3-2462 
0-4654 
56 35 
10 
0-2229 
1-5983 
2-5946 
0-7043 
57 18 
15 
0-0985 
1-3419 
2-2206 
0-8343 
58 18 
20 
0-0544 
1-1776 
2 • 0035 
0-8996 
59 33 
25 
0-0609 
1-0660 
1-8806 
0-9263 
61 2 
30 
0-1023 
0-9841 
1-8165 
0-9267 
62 44 
35 
0-1689 
0-9176 
1-7907 
0-9071 
64 38 
40 
0-2537 
0-8577 
1-7898 
0-8710 
66 42 
45 
0-3501 
0-7985 
1-8047 
0-8217 
68 56 
50 
0-4537 
0-7355 
1-8292 
0-7598 
71 17 
55 
0-5584 
0-6672 
1-8588 
0-6883 
73 46 
60 
0-6607 
0-5910 
1-8899 
0-6066 
76 20 
65 
0•7553 
0•5074 
1-9200 
0-5177 
78 58 
70 
0-8383 
0-4168 
1-9469 
0-4226 
81 41 
75 
0-9070 
0-3186 
1-9694 
0-3212 
84 26 
80 
0-9580 
0-2155 
1-9861 
0-2163 
87 12 
85 
0-9894 
0-1091 
1-9966 
0-1092 
90 0 
90 
8 
1-0000 
o-oooo 
2-0000 
o-oooo 
For which they become real. For e, between 56° and 90°, the values are all real. 
We thus divide Table II. giving numerical values into the range e = 0 ° to 56°, for 
