REPORT ON THE TIDES. 107 
The inequalities due to the declination of both luminaries are 
so mixed up together that it is impossible to treat them in the 
same manner. 
The succeeding transits of the moon being denoted by the 
letters A, B, C, D, E, F; and F being the time of the moon’s 
transit which immediately precedes the time of high water at 
London, the discussion of the 24,592 London observations has 
been made with reference to transit B. I intended the transit 
Balso to be used by Mr. Jones in the discussion of the Liverpool 
observations, but when the work was much advanced I found that 
Mr. Jones had employed the transit A. However, the tables 
which I gave in a former paper (Bakerian Lecture, 1836) offer 
the means of easily transferring the argument from one transit 
to another. It appears from these tables that the interval be- 
tween successive transits may be considered constant with re- 
ference to the age of the moon or time of transit, and depending 
only upon the parallax and declination. Hence the following 
table is sufficient. 
TaB.e showing the interval between the moon’s transit and the 
next succeeding, with a given moon’s parallax and declina- 
tion. 
Moon’s Parallax. 
54’ } 55’ | 56’ 
15° | 18° 
By means of this table Mr. Russell transferred the quantities 
- furnished by the London calendar month inequality from transit 
_ B to transit A, so as to become immediately comparable with 
_ Mr. Jones’s Liverpool quantities. 
eee 
