Dangerous spot. Washington, D.C., Dec. 18. Dr. L.H. Adams, Director of the Geological Laboratory of the Carnegie Institution, is standing in what might be a dangerous position should the little steel drum in the cabinet next to him explode. In this apparatus the scientists study the behavior and p

Why is an Earthquake" Washington, D.C., Dec. 17. The old question "why is an earthquake," and many other geological mysteries important to man, are being probed by scientific gadgets such as the two pictured here at the Geological Laboratory of the Carnegie Institute. The scientists work and apparat

New fathometer used at full speed. Washington, D.C., May 7. Dr. Herbert Grove Dorsey of the U.S. Coast and Geodetic Survey has invented an instrument to secure the precise measurement. The machine sends a sound, pitched so high that it is above audibility, traveling thru the water a known speed, the

Testing airplanes lenses used in map making. Washington, D.C., May 6. Dr. F.E. Washer of the U.S. Bureau of Standards testing the lens for the airplane cameras that are used by the Army and Navy. There are lights in the rear of the columnmeters and exposures are made on the photographic plate in fro

Device for testing testers. Washington, D.C., May 25. Herbert L. Whittemore, Chief Justice of the Engineering Mechanics Sections, U.S. Bureau of Standards, has been awarded the Edward Longstreth medal for his work in developing this device for testing the machines which in turn test construction mat

Dr. D.C. Bardwell, of the Research Lab. of the U.S. Bureau of Mines, collecting gaseous radium emanation. The radium is in the little safe at the right. Collections are made at intervals of from 4 to 10 days. The gas is drawn off under vacuum and purified by a liquid air refrigeration. The purified

U.S. testing liveliness of baseballs. Washington, D.C., Feb. 21. Experiments to test the liveliness of American, National and International League baseballs began at the National Bureau of Standards today. Edward B. Eynon, (left) Secretary of the Washington Baseball Club, and Dr. Hugh L. Dryden, Chi

Air engine tester. Dr. K.C. Dickinson, Chief of the Heat and Power Division of the Bureau of Standards, and the control room of the new aircraft engine testing laboratory at Arlington, VA. Here all engines for use on licensed airplanes are to be tested and to protect the observer, the control room a

Bureau of Standards designs mechanical batter to determine liveliness of baseballs. Washington, D.C., Feb. 21. Using a newly designed apparatus, the U.S. Bureau of Standards today began experiments to determine the relative home-run qualities of American, National and International baseballs. In con