OCR Text |
Show Mistake to Work by Poor Lights. It is a great mistake to sew, read or do other close work by artificial light which comes from any distance much above the level of the eye. Use a kerosene or gas lamp, which can be placed at the proper height. To demonstrate the truth of this observation, observa-tion, one has only to sit Indoors in the day time and lot the light pour through the upper foot or two of the window, keeping the rest of the window win-dow securely lightproof. The eyes will soon tell you of the unwise strain. |