Jasper County Democrat, Volume 22, Number 2, Rensselaer, Jasper County, 5 April 1919 — SCIENTIFIC NOTES [ARTICLE]

SCIENTIFIC NOTES

To conserve lubricating oil practically all machinery in Sweden has been given ball bearings. Colorado led the states for production of tungsten la&t year, with California in second place and Nevada third. Berlin inventors have perfected a process employing electricity for coating only one side of a sheet of metal with tin. A quickly attached paper cover for tumblers has beep invented thatjs said to keep carbonated drinks fresh until wanted.