Add record depth reached by Navy divers. Lieut. A.R. Benhke, Medical Corps, U.S.N., uses the van slyke gas analysis apparatus in extracting gases from body fluids following the dives. Analysis of body fluid is made immediately after each diver comes from the water, 8/9/38

Add record depth reached by Navy divers. E.B. Crosby, Boatswain's Mate, 1st Class, U.S.N., rebreathing into a special apparatus which measures the amount of helium gas absorbed by body after a dive into the tank at Washington Navy Yard,. 8/9/38

Depth of 500 feet reached by Navy Divers in recent test of Helium-Oxygen for air supply. Washington, D.C., Aug., 8/9/38. Record dives--deep as 500 feet--have been recently made at the Navy Yard here and off the USS Falcon Submarine rescue vessel operating from Portsmouth, N.H. by divers using Navy s

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

Add record depth reached by Navy divers. William Badders, Master Diver, U.S.N., who recently made a record dive of over 500 feet, is helped into his underwater suit just before taking an experimental dive in the tank at Washington Navy Yard, 8/9/38

U.S. conducts tests to improve acidity standards. Washington, D.C. June 16. At the National Bureau of Standards, Dr. Walter J. Hamer is making very accurate electrometric measurements on acidity standards. They are useful in the practical control of many processes such as electroplating, purificat

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

Studying why fruits taste that way. E.K. Nelson of the Department of Agriculture is shown making tests with an apparatus which the Department imported from Germany for the purpose of studying the essential oils or "flavor-giving" content of fruits and vegetables. At present chemists are acquainted w

Interesting job with Uncle Sam. Washington, D.C., Oct. 13. One volt after another is all in the day's work for Mrs. L.H. Brickwedde, who is a battery expert for the National Bureau of Standards. Using a potentiometer - or in other words, a standard cell comparator - Miss Brickwedde is shown calibrat