researches int stellar photometry. 
158 
Day 5 
Fig. 33. —Mean Light-Curve for V Delphini. 
LIGHT-CURVE. 
Fig. 32 shows the star’s variations from June, 1894, to August, 1904, the 
parts of the curve determined by the observations being drawn full, the parts 
assumed, with a broken line. When the variable was invisible the limit of vision 
is indicated by the point of the V-shaped characters. It will be seen that the 
observations fix definitely the number of maxima possible during this interval, 
determine the time of maximum for epochs 4, 5, and 6, with considerable certainty* 
and of epochs 3 and 8 less definitely, and show that the magnitude at minimum 
is in the neighborhood of 17. 
