‘ AMERICAN 
| JOURNAL OF SCIENCE AND ARTS. 
[SECOND SERIES.] 
ART, XXV.—On the. Variability of Personal Equation in 
Transit Observations; by Wiin1amM A. Rogers, Director of 
red University Observatory. 
‘aniability of ‘equation is, therefore, notan idle inquiry. = 
_ Am. Jour. Scr.—Szconp Series, Vou. XLVII, No. 141.—May, 180% aoe 
