334 
KEY. S. HAUGHTON ON THE TIDES OE THE 
The mean values of in at High Water and Low Water, as appears from the following 
Table, are : — 
h. m 
High Water m— — 0 27 
Low Water 6 1 
or, reducing both to High-Water Standard, 
m= — 0 27 
-0 11 
Mean . . . . —0 19 
Hence, by equation (5), 
— 0 h 19 m — i m = 2 b 53 m , 
i m = — 3 h 12 m , 
or 
• — 0 h 19 m — ? m = — 9 h 7 m , 
i m = + 8 h 48 m . 
An examination of the signs of the Diurnal Tide shows that we must select the value 
i m = + 8 h 48 m 5 (bis) 
From equation (4) we find 
V (0-849) 2 +(0’761) 2 
iVi ~ 2 sin 49° 
=076 foot=9 - 06 inches (6) 
If we plot the Luni tidal Intervals at High Water and Low Water to scale, from the 
following Table we obtain the Diurnal Inequality in time. It produces a maximum 
acceleration or retardation in the time of Tide, amounting to 39 minutes. 
The following Table gives the Lunitidal Intervals at High Water and Low Water. 
Table II. — Refuge Cove. Lunitidal Intervals. 
High Water. 
Low Water. 
High Water. 
Low Water. 
1853. 
h 
m 
h 
m 
h 
m 
1853. 
h 
m 
h 
m 
h m 
! Sept. 17- 
6 
30 A.M. 
6 
35 
Sept. 21. 
8 
30 A.M 
6 19 
17- 
12 
30 p.m. 
+ 0 
11 
21. 
2 
25 p.m 
— 0 
48 
17. 
6 
25 „ 
5 
54 
21. 
8 
40 „ 
6 33 
18. 
1 
0 A.M. 
+ 0 
20 
22. 
2 
54 A.M 
-0 
39 
18. 
7 
30 „ 
5 
10 
22. 
8 
45 „ 
6 48 
18. 
12 
50 p.m. 
-0 
14 
22. 
3 
30 p.m 
-0 
27 
18. 
7 
0 „ 
6 
4 
22. 
9 
45 „ 
6 12 
19- 
1 
30 A.M. 
+0 
7 
23. 
3 
30 A.M 
-0 
49 
19. 
7 
40 „ 
5 
43 
23. 
9 
50 „ 
6 29 
19- 
1 
45 p.m. 
-0 
2 
23. 
3 
55 p.m 
-0 
48 
19. 
7 
55 „ 
5 
52 
23. 
10 
30 „ 
6 13 
20. 
2 
0 A.M. 
-0 
6 
24. 
4 
0 A.M 
-1 
6 
20. 
8 
20 „ 
5 
46 
24. 
10 
40 „ 
6 26 
20. 
2 
1 0 P.M. 
-0 
20 
24. 
5 
0 P.M 
-0 
30 
20. 
8 
0 „ 
6 
30 
24. 
11 
10 „ 
G 20 
21. 
2 
5 A.M. 
-0 
44 
25. 
5 
10 A.M 
-0 
45 
