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Show What's New? Bontonito, a new mineral substance sub-stance used in manufacturing processes, pro-cesses, absorbs 10 times its own volume vol-ume of water. The world's largest electric sign. 723 feet long and with letters 60 feet high, has been erected cn a hill overlooking over-looking Portland, Oregon. A mechanical devi.;2 for measuring measur-ing the work performed by locomotives has been built by Northern Pacific engineers at a cost of $105,000. Los Angeles is testing a new apparatus appar-atus for fighting fire with carbon dioxide gas, which Is not damaging to merchandise upon which it is sprayed. Increasing use is being made of the fathometer, an instrument whereby the depth of waif under a ship may jo determined at stny inst int by echoes timed by an electrical device. |