26 



PROCEEDINGS OF THE AMERICAN ACADEMY 



TABLE X. — Distances of Centres. 



Light of Uxeclipsed Portion. 



Residuals. 



The residuals are all expresi^ed in terms of the full light of the star. 

 They therefore represent a larger error expressed in logarithms, or 

 stellar magnitudes, when the star is faint than when it is bright. If 

 reduced to logarithms their mean values become .008, .012, .027, .049, 

 .008. Dividing these quantities by 0.4 to reduce them to magnitudes, 



