EEGULAE SEEIES 



625. A New Condenser -Type Pressure Gage, by Dr. Thomas A. Perls. Jun 19i<-9. 



6k pp., 26 figs. 



626. A Resonant -Bridge Carrier System for the Measurement of Minute Changes 



in Capacitance, by George W. Cook. Feb I95I. ^1 pp., 25 figs. 



627. An Elastic-Tube Gage for Measioring Static and Dynamic Pressures, by 



Edward Wenk, Jr. May 19^+8. 36 pp., 1? figs. 



628. Apparent Slip and Tactical Diameters from Trials of a German "E" Boat, 



ty Lt. (jg) W.C. Sadler, USN. Jan 19h8. 2 pp., 1 fig. 



629. Propulsion Tests of Model 3839 Representing U.S. Maritime Commission 



Design C1-M-AV8, by A.Q. Aquino. Jan 19^8. 3 PP- Distributed only upon 



authorization of U.S. Maritime Commission. 



630. Results of Additional Experiments with a Model of the Revised G-60 



Sled -Type Towing Target, by Jack Posner. Jan 19^8. 12 pp., 5 figs. 



631. Hydrostatic Pressure Test of the Submarine Rescue Chamber YRC-6, by 



John W. Day. Sep 19i^9. Ik pp., 8 figs. 



632. Preparation of Data for Computation of Vertical Flexural Modes of Hull 



"Vibration by Digital Process, by Alice W. Mathewson. Sep 19^9. 13 pp., 

 8 figs. 



633. Tests to Determine Strength of Safety Harnesses for Aircraft Pilots, by 



G.B. Mayfield and Mary C. Crook. Oct 19^^^. 5 pp., 6 figs. 



S^k. Effect of Skeg Design on the Power Characteristics of a Twin-Screw 



Passenger and Trailer Ship as Predicted from Tests with Models i^013, 

 -1, -2, -3, by M.S. Harper. May 1950. 30 pp., 10 figs. 



Distributed only upon authorization of Sun Shipbuilding and Dry Dock Company. 



635. (NS 72it--008). Hydrostatic Pressure Tests on Thin Rectangular Diaphragms 



21 Inches by I3-I/2 inches, by John W. Day. Mar 1951. kk pp., 22 figs. 



636. (NS 72i(--008). Hydrostatic Pressure Tests on Thin Rectangular Diaphragms 



84 inches by 5^*- inches, by John W. Day. Apr 1951. kl pp., 32 figs. 



637' Hydrostatic Tests of Low-Pressure Bronze Valves and Fittings, by Clayton 

 L. Pittiglio and James G. McGinley. May 19i<-9. I8 pp., J figs. 



I-3S 



