384 MR. LUBBOCK ON THE TIDES IN THE PORT OF LONDON. 
horizon ; the inferior transits of the moon between the same limits were inter- 
polated, and added to the rest. The mean of these transits for the month of 
January, with the equation of time, was found to be twenty-four minutes, and 
the mean corresponding 1 time of high water 2 h 9 m ; the transits between half- 
past twelve and one, and in every succeeding half-hour, were treated in the 
same way. The columns underneath are given to explain more fully the 
method employed, which was the same for all the Tables. 
All the details of these calculations are deposited in the library of the Society. 
Table I. 
Time of Moon’s Transit from Nautical Almanac. 
Time of corresponding High Water from the 
Dock Books. 
January 
. 0 to 30 7 . 
January. 30' to 1 hour. 
January. 
h. m. 
January. 
h. m. 
January. 
h. m. 
January. 
h. m. 
1808 
28 
0 10 int d . 
28 
0 33 
28 
2 15 
28 
2 40 
29 
0 56 int d . 
29 
2 45 
1809 
16 
0 21 
17 
0 48 int' 1 . 
" 16 
2 0 
17 
2 30 
1810 
6 
0 19 int 1 . 
6 
0 49 
6 
2 0 
6 
2 30 
1811 
25 
0 11 int d . 
25 
0 41 
25 
2 0 
25 
2 30 
1812 
14 
0 6 
15 
0 35 int d . 
14 
2 0 
15 
2 35 
1813 
3 
0 13 int d . 
3 
0 39 
3 
2 30 
3 
2 25 
1814 
22 
0 20 in t d . 
22 
0 44 
22 
2 30 
22 
2 45 
1815 
11 
0 20 int d . 
11 
0 44 
11 
2 15 
11 
2 40 
1816 
29 
0 10 
29 
0 34 int d . 
29 
2 35 
29 
2 45 
30 
0 57 
30 
3 0 
1817 
' 17 
0 2 
17 
1 45 
18 
0 30 int d . 
18 
0 56 
18 
2 15 
18 
2 25 
1818 
7 
0 5 int d . 
7 
0 37 
7 
1 45 
7 
2 15 
1819 
26 
0 2 int d . 
26 
0 33 
26 
1 45 
26 
2 0 
1820 
16 
0 23 int d . 
16 
0 55 
16 
2 15 
16 
2 30 
1821 
4 
0 17 
5 
0 47 int 1 '. 
4 
2 10 
5 
2 20 
1822 
23 
0 16 
24 
0 41 int' 1 . 
23 
2 20 
24 
2 35 
1823 
12 
0 7 
13 
0 31 int". 
12 
2 15 
13 
2 30 
13 
0 54 
13 
2 45 
1824 
1 
0 8 
2 
0 32 int d . 
1 
2 10 
2 
2 25 
31 
0 12 
2 
0 55 
31 
2 35 
2 
2 30 
1825 
19 
0 14 
20 
0 36 int' 1 . 
19 
1 50 
20 
2 30 
20 
0 58 
20 
3 0 
1826 
8 
0 4 
9 
0 56 
8 
2 0 
9 
2 40 
9 
0 30 int d . 
— 
9 
2 20 
— 
— 
22) 
300 
24) 
1071 
22) 
47 30 
24) 
61 30 
13J 
441 
Mean corresponding - ^ 
2 9 
2 34 
Equation of Time*.... 
10 
10 
Time of High V ater. / 
Mean time of transit... 
24 
541 
* The equation of time was generally taken for the 15th of the month. 
