AECTIC SEAS. — PAET YI. POET KENNEDY. 
35a 
These values give for the age of the Lunar Tide deduced from Heights, 
d h m 
Age of Lunidiurnal Tide . 
33 33 
Mean . 
5 1 38 
3 11 3 
4 6 20£ 
This result differs considerably from the age deduced from Times, and agrees with what 
I have noticed in several tidal observations, viz. that the age of the Tide deduced from 
Heights is greater than that deduced from Times. 
Taking the mean of the Maximum Heights, we have 
M" 19-25 
sin 2 1 *. sin 55° 27' 
M'=23*37 inches; . 
= 23*37 inches, 
(16) 
and finally, from (8) and (16), 
M' 23-37 
S' ~ 23*4 : 
0*994, 
(17) 
If we collect together all the preceding results, we obtain the following : — 
Constants of the Diurnal Tide at Port Kennedy in July 1859. 
Solar Diurnal Tide. 
Age . Unknown. 
True Solitidal Interval i s = 5 h 12 m 7-| 3 
Coefficient (uncorrected for Parallax) . S' = 23*4 inches. 
Lunar Diurnal Tide. 
Age . . . . l d 4 h 14-|- ra (Times). 
„ . . . . 4 d 6 h 20i m (Heights). 
True Lunitidal Interval ?‘ m =0 h 33 m 50 s . 
Coefficient (uncorrected for Parallax) . M' = 18*4 inches (Times). 
„ „ „ . . M'=23*37 „ (Heights). 
^-=0*788 (Times). 
„ =0*994 (Pleights). 
B. Semidiurnal Tide. 
From the column of Semidiurnal Tides in Table I. it is easy to construct the following 
Table : — 
