262 THE REV. W. WHEWELL 5 S RESEARCHES ON THE TIDES. (SERIES XII.) 
Observations at Plymouth of the time when the Surface passes lines M and N ; and the 
calculated Time of High Water, hence obtained, compared with the Observed Time. 
M. 
ft. in. 
9 10 
Calculated High 
Water from 
M. 
N. 
ft. in. 
10 10 
Calculated High 
Water from 
N. 
Observed 
High Water. 
1839. 
h 
m 
S 
h 
m 
s 
h 
m 
S 
h 
m 
s 
h 
m 
S 
December 1 
5 
34 
23 
5 
2 
20 
10 
5 
7 
51 
45 
47 
1 
59 
46 
10 
5 
31 
26 
26 
34 
1 
59 
0 
1 
45 
0 
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10 
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47 
25 
25 
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2 
36 
40 
11 
6 
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54 
36 
2 
36 
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13 
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10 
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47 
40 
57 
30 
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44 
13 
11 
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18 
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50 
51 
2 
47 
20 
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41 
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3 
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3 
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10 
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16 
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7 
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22 
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32 
29 
30 
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11 
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54 
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33 
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1 
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27 
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10 
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30 
52 
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9 
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29 
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10 
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10 
11 
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55 
55 
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11 
25 
20 
10 
47 
