of a new Variable Star, { 6j 
further confirmation, compare two of the raoft diflant of 
them, viz. Sept. 29. 22 h. 'and Nov. 20. 6 h. which interval I 
find contains fix periods, each of 1 2 d, 20 h. =fc. 
I have it in my intention to ptirfue the fubjeft further, and 
when I have got a fuflicient number of obfervations, it will 
be eafy to determine the period with greater exaftnefs, and 
alfo at the fame time to afcertain the other particulars of the 
variation with more precision. In the mean while I wifib that 
•this account may be confidered as being yet imperfect ; fint I 
was induced to fend it in its prefent flate, in hopes that other 
aftronomers may contribute by their obfervations to the eluci- 
dation of this phenomenon. 
As (3 Lyre is a quadruple {tar, N° 3. of Mr. HerschelN 
Vth Clafs of Double Stars *, I was defirous to fee if any of 
thefmall {tars near it would be affected by its different changes? 
but they feemed not to fuffer any alteration, either when it 
was at its greatefi or at its leaft brightnefs. " I attended to this 
the more particularly becaufe the lofs of the {tar’s light was 
very confiderable, and the phenomenon feemed to be occafioned 
by a rotation on the ftar’s axis, under a fuppofition that there 
are feveral large dark fpots upon its body, and that its axis is 
inclined to the earth’s orbit. 
I muff not omit mentioning here that Mr. Herschel, 
amongff thofe {tars which , he fuppofeS to have undergone an 
alteration, reckons (3 or y Lyre ; becaufe he obferved that y was 
much larger than ( 3 , while Flamsteed marks both of the 
fame magnitude -fn It may alfo be added, as {hewing that (3 
Lyrae varied in former times, that Hevelius, in his Catalogue, 
differs from Flamsteed, and marks y of the third magnitude, 
* Phil. Tranf. for 1782, p. 142. 
■f Phil. Tranf. for 1783, p. 256. 
Y % and 
