WORK OF THE CARNEGIE AND SUGGESTIONS FOR FUTURE SCIENTIFIC CRUISES 



electric resistance thermometers (installed at Hamburg 

 In June), and deep-sea reversing thermometers (fig. 2); 

 meteorological shelter (fig. 3) to house wet- and dry- 

 bulb thermometers, Negretti and Zambra recording as- 

 piration psychro meter (installed at Plymouth in June), 

 recording thermograph, one wet and one dry electric- 

 resistance thermometer (installed at Hamburg in June, 

 as also a pair at the top of the mainmast and at the 

 crosstrees); and deck box for housing twenty-five Nan- 

 sen water bottles and thermometers, bottom samplers 

 (figs. 4 and 5), two Pettersson plankton catchers (fig. 6), 

 and other oceanographic equipment. 



3. In the engine room: Various switch boards and 

 control panels; main battery boosting generator; battery 

 charging motor generator for 24-volt battery; 320-am- 

 pere-hour battery equipment; air compressor; motor 

 generator for radio; batteries for radio and for resist- 

 ance-thermometer recorder; Kelvinator refrigerator 

 compressor; complete photographic darkroom equipment 

 and accessories; main sea cock; and lathe. 



4. Ocean laboratory: Electric salinity bridge (fig. 

 7) atnd accessories; chemical equipment for determining 

 salinity, oxygen, and phosphate content of sea water; hy- 

 drogen-ion concentration apparatus; and various instru- 

 ments and accessories for marine biological investiga- 

 tions. 



5. Radio room: Short wave receiver (fig. 8) and 

 transmitter; sonic depth finder; and quarters for observ- 

 er and radio operator. 



6. Atmospheric-electric house: New mountings and 

 connections for all instruments and batteries; motor, fan, 

 and ventilating shaft for conductivity apparatus (fig. 9). 



7. Cabin and wardroom: Kelvinator electric refrig- 

 erator; constant-speed motor and operating shaft for 

 earth inductor in forward dome; and new lighting cir- 

 cuits and connections. 



All arrangements and installations were sufficiently 



well advanced by May 1 so that the Carnegie sailed at 

 09h 00m under tow for St. Mary's River, near the mouth 

 of the Potomac. 



The scientific staff (fig. 10), their titles, and their 

 special fields, were as follows. 



Captain J. P. Ault, commander of the expedition, 

 master of the vessel, and chief of scientific staff. 



W. C. Parkinson, senior scientific officer, atmos- 

 pheric electricity and photography. 



O. W. Torreson, navigator and executive officer, 

 magnetism, navigation, and meteorology. 



F. M. Soule, observer and electrical engineer, mag- 

 netism and physical oceanography. 



H. R. Seiwell, chemist and biologist, oceanography. 



J. H. Paul, surgeon and observer, medical work, 

 meteorology, and oceanography. 



W. E. Scott, observer, magnetism, navigation, and 

 commissary. 



L. A. Jones, radio operator and observer, radio con- 

 ditions and communication, magnetism. 



The sailing staff (figs. 11 and 12) included: A.Erick- 

 son, first watch officer, C. E. Leyer, engineer, and F. 

 Lyngdorf , steward, all of whom had been on board during 

 the entire two years of the sixth cruise; E. Unander, 

 second watch officer; H. Jentoft, third watch officer; O. 

 Backgren, cook; W. H. Taylor, mechanic; eight seamen, 

 and two messboys. 



In addition to the above, the following members of 

 the office staff accompanied the vessel to complete tests 

 and installations and to assist with the observations dur- 

 ing swinging ship operations, and in the ship and shore 

 observations of the electric potential gradient at St. 

 Mary's River: W. J. Peters, O. H. Gish, J. \V. Green, 

 G. R. Wait, C. Huff, W. F. Steiner, and A. Smith. J. A. 

 Huff of Baltimore also accompanied the vessel in order 

 to complete electric installations. 



WASHINGTON, D. C. TO NEWPORT NEWS, VIRGINIA, MAY 1 TO 10, 1928 



Shortly after midnight on May 2, the Carnegie came 

 to anchor at the mouth of the St. Mary's River to await 

 sunrise before beginning the program of swinging the 

 ship to determine deviations of the magnetic instruments. 

 The day broke fair and six swings under her own engine 

 were made to detect any deviations in declination or 

 horizontal intensity. Simultaneous observations were 

 made ashore by the Department's field parties which had 

 established numerous magnetic stations on both the 

 Maryland and Virginia sides of the Potomac River 

 around the position previously selected for the swings. 

 The vessel returned to Its previous anchorage on the 

 evening of May 2, and remained there during May 3 and 

 4 while potential gradient comparisons were being made 

 with the shore station. Experiments were made also to 

 test the marine earth inductor and the radio installation. 

 On May 5 the Carnegie was swung again under her own 

 engine in the morning to detect any deviations in dip and 

 intensity, and then returned to anchorage to complete 

 potential gradient comparisons. Simultaneous shore ob- 

 servations were made during all swings and comparisons. 



At 20h 30m anchor was weighed and the Carnegie pro- 

 ceeded to Newport News where she arrived at 8h May 6 

 for docking and adjusting the oscillator of the deep-sea 

 sonic depth finder. 



During May 7 to 10 a new diaphragm was installed 

 on the oscillator (fig. 13) of the sonic depth finder, new 

 radio equipment was secured from the Norfolk Navy 

 Yard, new main sea cock was installed, and some small 

 repairs were made on the vessel. P. T. Russel of the 

 Washington Navy Yard assisted with the repairs to the 

 oscillator, and T. A. Marshall of the Naval Research 

 Laboratory assisted with the new radio equipment. Mr. 

 J. A. Fleming, Assistant Director of the Department, 

 and Mr. W. M. Gilbert, Executive Secretary of the Car- 

 negie Institution of Washington, arrived from Washington 

 for final conference and inspection. On May 10 the Car- 

 negie was towed out to Hampton Roads, some moving 

 pictures were taken of the vessel making sail (fig. 14), 

 and at 16h departure was taken from Cape Henry--cruise 

 VU had commenced at last. 



