104 SEVENTH REPORT—1837. 
deserve elucidation, particularly that in the parallax inequality 
for the interval to which I shall now briefly advert. 
Whatever may be the law of the moon’s parallax inequality, 
we may certainly conclude that it is proportional to the difference 
of the parallax from 57! (or to 8P); hence all the averages em- 
ployed to afford the inequality for H.P. 56’, 57', 58', &c., may 
be combined according to a method which I explained, Phil. 
Trans., 1836, p. 225. Mr. Russell has in this manner combined 
all the results afforded by the 13,391 Liverpool observations, 
and also those afforded by the 24,592 London observations, so 
as to produce for each place the inequality in the interval and 
height for H. P. 54’. Hence the Liverpool quantities which are 
given in the following table may be considered as the average of 
more than 1000 observations, and the London quantities as the 
average of more than 2000 observations. 
TaBLE showing the moon’s parallax inequality in the interval 
and in the height for H.P. 54’, as deduced from theory and 
observation at London and Liverpool *. 
Interval. Height. 
Moon’s | -—— | —————— —_—— 
Re Observation. Observation. 
NCOLy «|i LE WL CON s le en 
Liverpool} London. Liverpool] London. 
hm m ft ft. ft. 
OO UR ccc ncere’ lies aaeeients = BD) | a clecacacs | nccsevess —0°95 
0.30 | — 1:0 | — Or4 | ooo. aan. —1:16 | —1°28 |......... 
PUG Rateavese |\eesssans — AG | ccccccee | coccenees —1:09 
130 | —30 | — 26 J......... —1:14 | —1-17 |..... ... 
COUN A isesce |lpeeacs ped av) A #8: | seeddeds > ilivdabsence —1:07 
2°30 | — 5 | — Gel -| .....c5e. ey Nd fee ol Wi ee 
ab LO lteotoaccieet| ace coeaes eg! cesuesght|(cssccanes))|i——= 1:32 
3 30 | — 7:4) = 7-0) | i... .s0e. —1:09 | —118 }......... 
ALO aecosmacedliovetkes st —— Gi) cece cdscall eeeteneas —1:35 
4 30 | — 83 | — 7:7 | ..ceceree —1-10 | —1°21 |......... 
ee Ol rec ctasewerl| eataeiscs =— LOO coccescev | sessecece | — 1-67 
5 30 | —4:0 | —4°6 |......... —1-15 | —1°44 }......... 
Gi Oat teak: gevwsaess tes Mall cad aoisiaell enenay ss —1-60 
6 30.\-+ 4-0 | 1 4 |......20. aa i es ee 
Je Meckmatees|\csteessts Ml Case cedeesh| lanewceens —1:38 
7 30 | +83 | 47:5 | sce VO |) LOOT eid ace 
Be OU lev nawanailensec sees LS iiieuuaemn eel liens sass —1-14 
re Se me pea ray 
QEOO iltoeretcarss|hevnccsss SOY Wieneccaeed ieseaasnee —1:04 
9 30) +53 | +.5°6 |......... —1-11 | —1:07 |......... 
e AS Oat Nts te OF | dcssirllveeaees —1-02 
10 30 | +3:°0 | +24 |......... Be WW (Wt I pe ee Sen 
CON aaeeeeesel| cceaee eae — OT acieesucee lvepkacaens —0-93 
11 30 | +10 | +11 |......... = 116) = 02a eee 
* T have given a table similar to this in the Companion to the British Al- 
manac for 1838; but the argument of that table is the moon’s transit B. 
