Medicine: Sun & Glass

Children and animals that live in glassed houses are cheated of that ultraviolet part of the sun's light which helps the bones ossify. The glass blocks the ultraviolet rays; the children and animals become rickety. Therefore glass substitutes have recently appeared for sale. Prominent are:

VITA GLASS clear and "cathedral," made by Vita Glass Corp., Manhattan.

CEL-O-GLASS, made by Acetol Products Inc., New York City.

FLEX-O-GLASS, made by Flex-0-Glass Mfg. Co., Chicago.†

CORNING GLASS, made by Corning Glass Works, Corning, N. Y.

Vita Glass and Corning Glass are true glasses. Celo-O-Glass is...

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