16 PAKALLAXES OF STARS— BOOTH AND SCHLESINGER. tMBUOIES [voL.x N il I ; 



(*86) Lalande 21947, ll h 29 m , +37° 22'. 



+ 10.70 c- 7.24 M -2.50ir=- 0.0081mm. c=-0.0024mm. 

 +185.96 +5.12 = - .3530 /i=- .00196. 



+6.62 =- .0128 tt=- .00132. 



Probable error for unit weight, ± .0021 mm. = ±".030. 

 Annual proper motion in R. A., - ".104 ±".008. 

 Relative parallax, - // .019± // .012. 



No other determination of this parallax has been published. Porter gives — 0".176 for 

 the proper motion, which differs largely from the photographic. The comparison stars were 

 measured on two early and two late plates in such a way as to bring out relative proper motions, 

 but we found no motion large enough to account for more than a small fraction of the difference 

 from Porter. 

 (487) 61 TJrsae Majoris, ll h 36 m , +34° 46'. 



+12.80 c+ 2.52 n- 1.86 ir= + 0.0222 mm. c=+0.0028mm. 

 +299.01 +10.67 =- .0023 /j=- .00029. 



+ 8.29 =+ .0513 tt=+ .00719. 



Probable error for unit weight, ± .0016 mm. = ±".023. 

 Annual proper motion in R. A., — ".015 ±".005. 

 Relative parallax, + ".105 ±".008. 



The spectroscopic determination of this parallax at Mount Wilson yields +0".072. Boss 

 gives — 0".007 for the proper motion. 



