Dr. Herschei/s Account of the Changes 
376 
FI. 49 Serpentis. I, 82. 
In the year 1783, March 7, the position of the two stars of 
this -double star, was 21 0 33' north-preceding. May 20, 1802, 
32 0 52'; and, April 2, 1804, 35 0 io' ; which gives a change of 
13 0 37', in 21 years and 26 days. The stars are now a little 
farther asunder than they were formerly. A parallactic motion 
would account for the change of the angle, but not for the 
increased distance. 
Preceding FI. 11 Serpentarii. II, 23. 
The position of the stars. May 18, 1782, was 46° 24' north- 
preceding. May 20, 1802, it was 66 ° 56'; which gives a change 
of 20 0 32', in 20 years and 2 days. A parallactic motion, if the 
small star should be sufficiently distant from us, will account 
for it. 
FI. 38 Piscium. II, 50. 
The position, June 30, 1783, was 25 0 3' south-preceding, and, 
August 31, 1802, it was 34°43'. The change is 9°4o', in 19 years 
and 62 days. The small star has been retrograde. If the change 
had been owing to the systematical parallax, the motion would 
have been direct. 
Near FI. 64 Aquarii. Ill, 69.* 
The position, August 21, 1783, was 20° 3' north-following. 
Oct. 16, 1802, it was 31° 34'. The change, in 19 years and 56? 
days, is 11 0 31'; and may be accounted for by a parallactic 
motion of the large star, especially as the stars are extremely 
unequal in apparent magnitude. 
* I11 Bode’s Catalogue, it is now called 222 Aquarii. 
