Abstract :
The work-place of today which does not have good artificial lighting is, in this respect, an antiquated survivor of yestercentury when artificial lighting was undeveloped. Now, artificial light need no longer be a poor substitute to be used when daylight fails. It costs no more than daylight and it is superior in a number of respects. It can be obtained when and where desired. It need seldom fail. It can be used effectively to supplement daylight, thereby making daytime operations in work-places safer and more efficient. It also makes possible multiple-shift or continuous operation.
