Emery County Progress | 1907-11-23 | Page 4 | French Scientist's Discovery

french scientists discovery the french scientist dr foi has discovered that the light troll mercury vapor lamp passing two sheets 0 blue glass and reflect into the eye by a large lens revel the internal conditions infinitely be ter than the white light by 1 lacing a screen with a pin hole be tween the light an 1 the eye a mag image of the vessels at the back of the retina which have hith arto erto been almost invisible has been the capillary value the di ameter of which Is only two of a millimeter are to distend with each heartbeat and t la even possible to count the blood globules