15 



REGULAR SERIES 



259. Memorandum on Towing Carriage Acceleration. Jun 1930. 13 pp., 1 fig. 



261. Full Scale Tests of Turret Foundations. Jun 1930. 15 pp., k figs. 



262. The Strength of Thin Reinforced Tubes under External Pressure - Report 



of Work Completed and Progress of Experiments, by D.P. Windenburg. Jun 

 1930. W pp., 15 figs. 



263. Natural Frequencies of Hull Vibration. Jul 1930. 22 pp., 2 figs. 



264. The Effect of Wind on Ship Trials, by Capt. E.P. Eggert , USN. Aug 1930. 



13 pp., 2 figs. 



265. Preliminary Tests of Thrust Meter Elements, by D.P. Windenburg. Aug 



1930. 18 pp., 10 figs. 



266. Brewster and Company Float B-587 - Bureau of Aeronautics Project No. 



2197 - Model Basin Tests on. Sep 1930. 9 PP- , 5 figs. Distributed only 



upon authorization of Brewster and Company. 



267. The Influence of Temperature on the Frictional Resistance Experienced 



by Plane Surfaces Moving in a Fluid, by K.E. Schoenherr. Oct 1930. 

 ^h pp., 8 figs. 



268. Resistance of Various Rudders on a Model of the U. S.S. PATOKA, by Capt. 



E.P. Eggert, USN. Oct 1930. 3 PP, 



269. Design of Electromagnetic Damping Apparatus, by D.P. Windenburg. Nov 



1930. 72 pp., 17 figs. 



270. Report of Rolling Experiments with Model No. 2697 Representing U.S. 



Light Cruisers Nos. 26-31. Nov 1930. *! pp. , 2 figs. 



271 . A Theoretical Investigation of the Point Source-Sink Envelope in Three 



Dimensions, by D.P. Windenburg. Nov 1930. 22 pp., 4 figs. 



272. An Improved Portable Strain Gage, by G.A. DeShazer. Jan 1931- 49 pp., 



19 figs. 



273. Test of Model Representing Tentative Battleship for 1931- Nov 1930. l6 



pp. , 10 figs. 



274. U.S. Coast Guard - Proposed Flying Boat - Experiments with Model of the 



Hull. Dec 1930. 12 pp., 6 figs. 



275. New Experiences and Developments in the Technique of Ship Trials, by 



Dr. Gunther Kempf. Translated by M.C. Roemer. Dec 1930. l8 pp. tms 



is Translation 3- 



276. Test of Drawing Room Model of 10,000 Ton Light Cruisers (#24-#25) in 



Water to Determine Forces Due to Wind. Dec 1930. 20 pp., 12 figs. 



277. Further Comments on Cavitation with 35 Knot Destroyers. Jan 1931. 6 pp., 



2 figs. 



278. Instructions for Setting Up and Operating Electrically Recording Exten- 



someters Pitted with Bellevue Gages - Serial Nos. 1 to 5 Inclusive, 

 Model 1930. Jan 1931. 27 pp. , 11 figs. 



