ABCTIC SEAS. — PAET VI. POET KENNEDY. 
351 
when B is a Minimum, equation (12) reduces to 
h m s h m s"J 
0 29 30= 5 12 7£-M, 
or 
6 =- 4 42 371 
or 
19 17 22|. 
^=sin(4 h 42 m 37| s )=sin(70° 39^') =0*943; 
but 
M v M' sin 2 [ x . 
S' sin 2c ’ 
or 
M' M" sin 2 c n . Q/ )q v sin43°34 f 
S' . S" sin2;x sin55 0 27 ,, 
or 
|r=0*788 (13) 
From (8) and (13) we find 
M'=18*4 inches (14) 
From the values already found for the constants of the Solar Diurnal Tide, it was 
easy to calculate its value, for every hour, from the formula 
D=S' sin 2<r cos(s— i e ). 
These values, if subtracted from the Diurnal Tide in Table I., would leave the Lunar 
Diurnal Tide, the principal phases of which are given in the following Table. 
Table VI . — Times of Half-Flood and Half-Ebb, and Heights of High Water and Low 
Water of the Lunar Diurnal Tide at Port Kennedy in July 1859. 
Half-Ebb. 
Low Water. 
Half-Flood. 
High Water. 
h m 
ft. in. 
h m 
ft. in. 
J«iy 7 ... 
2 0 
0 5g 
13 40 
0 6J 
8 
1 50 
0 91 
14 10 
1 0 
9 
1 30 
1 If 
13 50 
1 24 
10 
2 20 
1 2* 
14 0 
1 0 
11 
1 30 
1 3 
15 40 
1 31 
12 
6 15 
1 If 
17 25 
1 4 
13 
5 50 
1 64 
18 25 
1 54 
14 
7 10 
1 5 £ 
19 15 
0 8 
15. 
7 30 
0 8J 
20 10 
0 8 
16 
8 30 
0 9 
20 45 
0 94 
17 
9 35 
0 7 i 
21 30 
0 4~ 
1 8. 
10 0 
19. 
j 
Half-Flood. 
High Water. 
Half-Ebb. 
Low Water. 
20. 
23 35 
0 4 
21 
11 50 
0 6 
22 
13 10 
0 9 
0 40 
o 54 
23. 
13 0 
1 2 
1 30 
0 Ilf 
24 . 
14 30 
1 4 
2 50 
1 
25. 
15 40 
1 6 
3 30 
1 4 
26 
17 0 
1 7J 
4 15 
1 84 
! 27 
— 
— 
6 15 
1 7 
3 a 2 
