(3) CHARLES S. GILMAN: Large-scale synoptic aspects of forecasting freezing temperatures 
in Florida (15 minutes) 
(4) ROBERT Do FLETCHER: Computation of thunderstorm rainfall (25 minutes) 
(5) C. F. BROOKS: .The representativeness of a climatological station (15 minutes) 
(6) V. CONRAD: A contribution to the theory of relative homogeneity of climatological series 
(15 minutes) 
(7) LUNA B. LEOPOLD: Status of climatological studies in the Hawaiian Islands (10 minutes) 
Tuesday, April 29, 1947, 09h00m, Room 4 (Auditorium, Natural History Building) 
(8) H. R. BYERS and COLLABORATORS: The possible use of radar in estimating the amount 
of rainfall over a small area (20 minutes) 
(9) N. E. MANOS and W. L. MOLO: A technique for a weather study of an air route ( 15 min¬ 
utes) 
(10) R. TOUSEY, J. D. PURCELL, J. J. OBERLY, F. S. JOHNSON, and E. DURAND: Ozone 
distribution from a V-2 rocket (10 minutes) 
Immediately following the above papers, the American Meteorological Society will begin its 
sessions in the same room. The sessions of the American Meteorological Society will continue 
Tuesday afternoon and all day Wednesdav In the Auditorium of the National Archives, Thursday 
morning, May 1, 1947, the American Meteorological Society will hold a joint session with the 
American Physical Society in the Auditorium of the Building of the Commerce Department, and, 
in the afternoon, its final session in that place. 
SECTION OF TERRESTRIAL MAGNETISM AND ELECTRICITY 
Tuesday, April 29, 1947, 09^00®, Room 2 (Conference Room B, Departmental Auditorium) 
Business Session 
(a) Reports of committees 
(b) Announcement by Section Tellers of the officers elected by the Section for the triennium 
beginning July 1, 1947 
(c) Other business 
Scientific Sessions 
(1) E. H, VESTINE: Remarks on the Schroedinger unitary field theory as applied to the Earth's 
and Sun's permanent magnetic field (15 minutes) 
(2) L, Ho RUMBAUGH: The properties of the saturable inductor as a magnetic field measuring 
device (15 minutes) 
(3) E, O, SCHONSTEDT: The orientation problem in continuously recording mobile magne¬ 
tometers (15 minutes) 
(4) L, R. ALLDREDGE: The design of saturable-inductor type magnetometers and gradio- 
meters (20 minutes) 
(5) J, M. KLAASSE: The correlation of magnetometer records with flight paths in aerial 
magnetic mapping (15 minutes) 
(6) FRANK PRESS and MAURICE EWING: Magnetic anomalies over oceanic structures 
(15 minutes) 
(7) ELLIOTT B. ROBERTS: The problem of magnetic mapping (10 minutes) 
(8) ROLAND F. BEERS and HAROLD R, LENSEN: A new station type magnetometer (10 min¬ 
utes) (to be presented by Dr. Lensen) 
(9) O, H. GISH: Atmospheric-electric phenomena at Parfcutin Volcano (15 minutes) 
(10) ELLIOTT B, ROBERTS: Current magnetic work of the United States Coast and Geodetic 
Survey (by title) 
Tuesday, April 29, 1947, 14^00^1, Room 2 (Conference Room B, Departmental Auditorium) 
(11) JOSEPH KAPLAN: Some fundamental processes of geophysical interest in oxygen and 
nitrogen (15 minutes) 
(12) H, W. WELLS: Polar radio disturbances during magnetic bays (15 minutes) 
(13) M. D. HARRINGTON: Relations of ion density in the D region to the sunspot cycle as in¬ 
ferred from radio-wave absorption and variations in terrestrial magnetism (10 min¬ 
utes) 
(14) A. G. McNISH and J, V, LINCOLN: Statistical study and prediction of annual sunspot num¬ 
bers (15 minutes) 
(15) T. N. GAUTIER: Variability of noon values of F-2 critical frequency at different stations 
(10 minutes) 
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(16) A, G, McNISH: Possible effects of terrestrial magnetic variations on ion density in the 
F-2 layer (10 minutes) 
(17) T, R, BURNIGHT: V-2 ionosphere studies by the Naval Research Laboratory (10 minutes) 
(18) E. DURAND, F. S, JOHNSON, J. J 0 OBERLY and R. TOUSEY: Absorption lines in the solar 
spectrum from 2950 to 2300 angstroms (15 minutes) 
(19) G. R. WAIT: The electrical conductivity of air irradiated by ultraviolet light (20 minutes) 
(20) HARLAN T„ STETSON: A report on recent studies of radio field intensity measurements 
at the Cosmic-Terrestrial Research Laboratory, Needham, Massachusetts (15 min¬ 
utes) 
(21) H. HERBERT HOWE: Magnetic measurements at Little America (10 minutes) 
On Thursday morning, May 1, 1947, the American Physical Society and the American Meteor¬ 
ological Society will have a joint session in the Auditorium of the Building of the Commerce 
Department. A symposium on Physics of the upper atmosphere will be presented., 
SECTION OF OCEANOGRAPHY 
Monday, April 28, 1947, 09h00 m , Room 2 (Conference Room B, Departmental Auditorium) 
Business Session 
(a) Reports of committees 
(b) Announcement by Section Tellers of the officers elected by the Section for the triennium 
beginning July 1, 1947 
(c) Other business 
Scientific Sessions 
Symposium on oceanographic studies in Bikini and surrounding areas 
(1) P. A. HUMPHREY: Meteorological conditions in the northern Marshalls region 
(2) K, O, EMERY, J. I, TRACEY, JR., and H. S. LADD: Submarine geology and hydrography 
in the northern Marshalls 
(3) W. S. VON ARX: The circulation of Bikini and Rongelap Lagoons 
(4) C. A. BARNES, D. F, BUMPUS and J, LYMAN: Ocean circulation in the Marshall Islands 
area 
(5) E. C, LAFOND: The use of bathythermograms to determine currents in low latitudes 
(6) W. L. FORD: Salinity arid temperature relationships in Bikini Lagoon 
(7) W, H. MUNK and M. C, SARGENT: Wave driven currents over shallow reefs 
(8) T. S, AUSTIN, M, C 0 SARGENT and D. B, JOHNSTONE: Basic biological factors determining 
the rate of growth of Bikini Atoll 
Monday, April 28, 1947, 14h00 m , Room 2 (Conference Room B, Departmental Auditorium) 
Symposium on oceanographic studies in Bikini and surrounding areas (concluded) 
(9) M. W. JOHNSON: Zooplankton as an index of water exchange between coral lagoons and 
the open sea 
(10) J. W, JOHNSON, Mo P, O'BRIEN and A 0 B. FOCKE: Model experiments on impulsive 
waves in shallow water 
(11) R, REVELLE, N. J. HOLTER and F. G. MORRIS, JR.: Some characteristics of surface 
gravity waves from explosions 
(12) K. G. SCOTT and G 0 C. EWING: Radioactivity tracer technique applied to measurement of 
large scale diffusion in the sea 
(13) W. H. MUNK, G. C. EWING and R, REVELLE: Diffusion in Bikini Lagoon 
The following papers, not related directly to the Symposium, are to be read by title 
(14) R. O, GLOVER: Oceanographic activities at the United States Navy Hydrographic Office 
(15) J, F 0 FARLEY: Coast Guard plans for oceanographic work 
(16) L. O, COLBERT: Availability of oceanographic data in the United States Coast and 
Geodetic Survey 
(17) H. U, SVERDRUP: Research within physical oceanography and submarine geology at the 
Scripps Institution of Oceanography during April, 1946 to April, 1947 
(18) J. R. SEIWELL: Investigation of underwater pressure records and simultaneous sea sur¬ 
face patterns 
(19) G. H. KEULEGAN and W. C. KRUMBEIN: Stable configuration of the bottom slope in a 
shallow sea and its bearing on geological processes 
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