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The Magnetic Work of the Carnegie and the Urgency of New Ocean Magnetic Surveys
Early Gravity Observations at Sea
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amplitude Apia approximate epoch atmosphere atmospheric-electric balloon biological bottom samples cabin Callao Captain Ault Carnegie Inst chart room chemical chronometer collecting cruise VII deck deep-sea Department of Terrestrial determined earth inductor electric engine equal annual change equipment expedition feet fictitious pendulum fluorine Geodetic globigerina ooze Gravity records horizontal intensity inductor installed instrument Island isochronism Isoporic chart laboratory latitude lines of equal magnetic declination magnetic observations marine Mary’s River measurements ment Meteorology meters method miles Nansen bottles Navigation nets obtained ocean station oceanographic oceanographic station operator Pacific Pago Pago pendulum Penrhyn Island piano wire pilot-balloon plankton pump potential gradient quarter-deck radio records reversing sailing salinity sampler San Francisco scientific staff Seiwell sextant ship ship's snapper sonic depth finder surface Survey swinging temperature Terrestrial Magnetism theodolite thermometers tions Torreson towed townets values Vening Meinesz vertical Washington water bottles weather winch wind