Evening Republican, Volume 21, Number 50, Rensselaer, Jasper County, 8 March 1918 — Worth Knowing. [ARTICLE]

Worth Knowing.

In a new electric photograph printing machine an automatic switch shuts off the light at a set time, insuring even prints. Carbonic acid gas is used in a machine of European invention to spray mortar or plaster on a wall, and hasten Its setting. A new attachment for fountain pens holds them up at an angle and prevents them spilling ink when laid on horizontal surfaces. * So that a smoker can see what, is occurring behind him an English inventor has patented a pipe with small mirrors on the bowL