[neelin] 



THE SENSITIVENESS OF THE EYE TO LIGHT 



231 



tensity of the light in the standard. The reciprocals of this product 

 it was thought would represent sensibility. The portions of the 



specti'um obsei'vod with the correspondiiig data and calculations are 

 given in Table XV. The sensibilit}' in each case was plotted as a 

 function of the corresponding wave length as shown in Curve l,Fig. 4, 



