Abstract
Against the treatise “On Standard Illumination Intensity of Factory” by Mr. Gansei Doi, the auther describes the following facts and the reason:
1. The luminous intensity at working plane is not to be determined referring to the relation between light and fatigue only, but it must be chiefly considered about the relation be tween illumination and eye sight from the practical point of view.
2. It is most suitable for the practical cord to provide the minimum intensity and the recom mended intensity.
