130 



Parallax of 6 l l Cygni, deduced from 



Table XVI. — Observational Data. 

 Comparison Stars 39 and 6. 



Plate 

 No. 



Corrected 

 Star 39 



Distance. 

 Star 6 



Sum 



of 



Distances 



Mean 

 minus Sum 



Difference 



of 

 Distances 



Scale 

 Corr. 



Corrected 

 Difference 



I 



2 



3 

 4 



113.7446 

 •7430 

 •7364 



94.9562 

 .9648 

 .9600 



208.7008 

 .7078 

 .6964 



— .0261 



—•033I 

 — .0217 



18.7884 

 .7782 

 .7764 



— .0023 

 — .0030 

 — .0020 



18.7861 

 •7752 

 •7744 



5 

 6 



7 



■7575 



.9487 



.7062 



—•0315 



.80S8 



— .0028 



.8060 



8 



9 

 10 

 11 

 12 

 13 

 15 

 16 



17 

 18 



19 



20 



.7218 

 .7204 

 .7166 



.9480 

 •9526 

 .9487 



.6698 

 .6730 

 .6653 



+.0049 



4-. 0017 

 +■0094 



•7738 

 .7678 



.7679 



-I-.0004 

 -J-.0002 

 -j-.oooS 



.7742 

 .7680 

 .7687 



.7230 

 .7000 

 .6976 

 .6843 

 .6968 

 .6970 

 .6766 



•9357 

 .9668 



•9552 

 .9781 

 .9650 

 .9805 

 .9701 



.6587 

 .6668 

 .6528 

 .6624 

 .6618 



•6775 

 .6467 



+.0160 

 +.0079 



-J--02I9 



+.0123 



+.0129 

 — .0028 

 +.0280 



•7873 

 •7332 

 .7424 

 .7062 

 .7318 

 •7165 

 .7065 



+.0014 

 -J-.0007 

 -J-.0020 

 -j-.ooii 



+ .OOI2 



— .0003 

 +.0025 



.7887 

 •7339 



• 7444 

 .7073 



• 7330 

 .7162 

 .7090 





Adop 



ied mean, 



208.6747 





Assu 



med value 



, 18.7560 



