Academy of Sciences.] 

 No. li.] 



(535) 



INDIVIDUAL DETERMINATIONS. 

 X Piscium, 23 h 37 m , +1° 14'. 



35 



+10.70 c+ 11.77/x+0.15ir=- 0.0989 mm. c= -0.0066 mm. 

 +107.61 -2.82 =- .3411 m=- .00240. 



+5.50 =+ .0160 *-=+ .00187. 



Probable error for unit weight, ± .0020 mm. = ±".029. 

 Annual proper motion in R. A., — ".128 ±".011. 

 Relative parallax, + ".027±".012. 



No other determination of this parallax has been published. Boss gives — 0".135 for the 

 proper motion. 



This star was first referred to a set of three comparison stars which yielded — 0".205 for 

 the proper motion. This differs so much from Boss and Porter that we examined the com- 

 parison stars for proper motion and found that one of them moves 0".2 a year. This star 

 being rejected, a new set of comparison stars gave the results quoted above. 



(536) 



Anonymous, 23 h 37 m , 



+ 1° 7'. 



+11.20 c+ 10.99 /j+0.55 ir=- 0.1130 mm. c=-0.0137 inm. 

 +108.83 -3.44 =+ .2404 /«=+ -00363. 



+5.82 =- .0128 «■=+ .0012''. 



Probable error for unit weight, ± .0015 mm. = ±".022. 

 Annual proper motion in R. A., +".194 ±".008. 

 Relative parallax, +".018±".009. 



