AND ON THE REMOTE HISTORY OF THE EARTH. 
493 
Table I. — Showing the lagging of the several tides at the beginning of each period. 
Semi-diurnal 
(0- 
Diurnal 
(0- 
Fortnightly 
I. 
1 7\° 
19F 
O 
O 
II. 
o 
CO 
Cl 
GO 
C<1 
1° 5' 
III. 
29r° 
40° 
2° 27' 
IV. 
32^ 
46i° 
5° 30' 
Table II.—Showing the contribution of the several tidal effects to tidal reaction 
O 
i.e., to -j\ at the beginning of each period. The numbers to be divided by 10 10 . 
Semi-diurnal. 
Diurnal. 
I. 
12- 
1-2 
II. 
69- 
6-3 
III. 
2200- 
200- 
IV. 
70000- | 6100- 
Table III.—Showing the contributions of the several tidal effects to the change of 
O O 
obliquity (i.e., to log i0 tan i(l —sin 3 i)) at the beginning of each period. 
Lunar 
semi-diurnal. 
Lunar 
diurnal. 
Solar 
semi-diurnal. 
Solar 
diurnal. 
Combined 
semi-diurnal. 
Combined 
diurnal. 
Fortnightly. 
cl 
— log tan i (1 — l sin 2 ?). 
*1. 
•82 
T3 
T8 
•03 
-•06 
-•48 
— •006 
•60* 
II. 
•44 
'•06 
•02 
-•01 
— T 6 
-•003 
•36 
III. 
•22 
•03 
-•02 
-•003 
•23 
IV. 
•13 
•02 
-•004 
14 
