( *59 ) 
mark'd as doubtful on Account of the Undulation 
of the Air, &c. And this does not differ 3" from 
the Hypothefis. 
The Agreement between the Hypothefis and the 
Observations of this Star is the more to be reguard- 
ed, fmce it proves that the Alteration of Declination, 
on account of the Proceffion of the Equinox, is (as 
I before luppofed) regular thro’ all Parts of the Year; 
10 far at lead, as not to occafion a Difference great 
enough to be difcovered with this Indrument. It iike- 
wiie proves the other part of my former Suppofition, 
vtz. that the annual Alteration of Declination in 
Stars near the Equinoctial Colure, is at this Time 
greater than a Precelllon of ;o" would occafion : for 
this Star was 20" more Southerly in September 1718 
than in September 1727, that is, about 2“ more than 
it would have been, if the Precetfion was but 70" 
But I may hereafter, perhaps, be better able to deter- 
mine this Point, from my Obfervations of thole 
Stars that lie near the Equinoctial Colure, at about 
the lame Didance from the North Pole of the E- 
quator, and nearly oppofite in right Afcenfion. 
I think it needlefs to give you the Comparifon 
between the Hypothefis and the Obfervations of any 
more Stars ; fince the Agreement in the foregoing is a 
kind of Demondration (whether it be allowed that 
I have difcovered the real Caufe of the Th<e„omen a 
or not ; ) that the Hypothefis gives at lead the true 
Law of the Variation of Declination indifferent Stare 
with RelpeCt to their different Situations and Af- 
peCts with the Sun. And if this is the Cafe, it mud 
be granted, that the Parallax of the fixt Stars is much 
imaller, than hath been hitherto fuppofed by thole, 
S 1T f 1 who 
