Evening Republican, Volume 21, Number 11, Rensselaer, Jasper County, 22 January 1918 — POPULAR SCIENCE [ARTICLE]

POPULAR SCIENCE

One and a quarter million women are stated to be engaged in men’s places on the British railways. z • India ink originally came from China, but now it is successfully made in this country of lamp black and glue. An Australian scientist has invented a fluorescent microscope to be used with ultra-vio-let rays, which enables differences in matter noL>perceptible by ordinary light to be recognized. • A Harvard professor of chemistry is making experiment with lachrymogenic gas for use in the trenches. It causes copious weeping that renders accurate ■ marksmanship impossible on the part of the enemy.