EEY. S. HATTGHTON ON THE TIDES OF THE 
352 
I have used the Times of Half-Flood and Half-Ebb in this Table in preference to 
the Times of High Water and Low Water, as the vertical motion of the water is a 
maximum at Half-Flood and Half-Ebb. 
Table YI. contains the Solar Hours of Half-Flood and Half-Ebb. These are reduced 
in the following Table to Lunar Hours. 
Table VII. — Moon’s Hour- Angle at times of Half-Flood and Half-Ebb of Lunar 
Diurnal Tide at Port Kennedy in July 1859. 
Day. 
Moon’s Hour- Angle 
at Half-Flood. 
Moon’s Hour- Angle 
at Half-Ebb. 
li m 
h m 
July 7 
7 15 
19 15 
8 
6 45 
18 48 
9 
5 38 
17 43 
10 
4 59 
17 44 
11 
4 9 
16 6 
12 
6 36 
19 50 
13 
6 43 
18 36 
14 
6 34 
19 14 
15 
6 51 
18 34 
16 
6 42 
18 46 
17 
6 46 
19 6 
18. 
18 51 
IQ. 
20 
Half-Ebb. 
Half-Flood. 
21 
6 10 
18 40 
22. 
6 29 
19 17 
23 
6 29 
18 23 
24. 
6 53 
19 3 
25 . 
6 34 
19 17 
26 
6 15 
19 37 
27 
7 9 
Mean ... 6 23 10 s 
18 44 30 s 
Hence the mean value of the true Diurnal Lunitidal Interval is at High Water 
i m = 0 h 33 ra 50 s (15) 
The coefficient M', of the Lunar Diurnal Tide, may be found from Heights from 
Table VI. 
The Lunar Diurnal Tide reached its maximum — 
d h m ft. in. 
July 13 11 38 1 6£ 
July 26 10 3 . . . . . 1 8i 
The Moon’s Maximum declination occurred — 
d h m o - i II 
July 8 10 0 . . . fZ=27 43 33 S. 
July 22 23 0 ...„ 27 43 21 N. 
