440 



SCIENCE 



[N. S. Vol. LIV. No. 1401 



THE AMERICAN ASTRONOMICAL 

 SOCIETY 



The twenty-sixth meeting of the society was held 

 from August 30 to September 1, 1921, at Wesleyaa 

 UniveTsity, Middletown, Connecticut. The attend- 

 ance was the largest in the history of the society, 

 more than one hundred members and guests being 

 present. The visitors were housed in the college 

 dormitories and had meals in common in one of the 

 fraternity houses. Among the social events were a 

 reception at the Van Vleek Observatory by Dr. and 

 Mrs. Frederick Slocum, tea at the home of Presi- 

 dent and Mrs. Shanklin, a motor ride, hike, and a 

 boat trip on the Connecticut Eiver. 



The sessions on three days were taken up by the 

 reading of papers and committee reports. The 

 eclipse committee gave complete information in re- 

 gard to possible sites for the total solar eclipse 

 in Australia on September 21, 1922, and reported 

 progress on investigating the conditions for the 

 eclipse in lower California and Mexico on Septem- 

 ber 10, 1923. There is promise that opportunity 

 will be taken at both of these eclipses to verify 

 the Einstein effect which was first observed at the 

 eclipse in 1919. 



Twenty new members were elected to the so- 

 ciety, bringing the total membership of the society 

 up to 370. The society elected to honorary mem- 

 bership Professor C. W. L. CharUer of the Univer- 

 sity of Lund. 



Officers for the ensuing year are as follows : 



President — Prank Schlesinger. 



Vice-presidents — Otto Klotz and John A. Miller. 



Secretary — Joel Stebbins. 



Treasurer — Benjamin Boss. 



Councilors — Philip Pox, Caroline E. Purness, A. 

 O. Leuschner, Henry Norris Russell, V. M. Slipher, 

 PredericJc Slocum. 



In view of the increasing interest taken in the 

 gatherings of the society, it was decided to have 

 two meetings during the next year, the first to be 

 held in Christmas week in 1921 at a place not 

 yet determined. 



The program of papers was as follows: 

 On the correlation of wave-length with spectral type 



aiul absolute magnitude: Sebastian Albeeoht. 

 The mimier and distribution of novce: S. I. Bailey. 

 li'ew measures of solar activity and the earth- 

 effect : Louis A. Bauee. 

 Notes on the early evolution of tlie reflector: Lewis 



Bell. 

 On the real motions of the stars: Benjamin Boss, 



Harry Raymond, and Ralph E. Wilson. 



The Trojan group of asteroids : Ernest W. Brown. 

 Peculiar spectra in the Iwge Magellanic cloud: 



Annie J. Cannon. 

 Gilbert's bombardment hypothesis: Julian L. 



COOLIDGE. 



The amplitude of the light-variaiion of S Cephei: 

 Ralph H. Custiss. 



The spectrum and radial velocity of Comet 1913 f 

 (Del-avajh) : Ralph H. Cuetiss and Dean B. Mc- 

 Laughlin. 



Th.e parallax of Kova Aquilae No. 3: Zaccheus 

 Daniel. 



Spectroscopic measurements of the solar rotation in 

 1915: Ralph E. De Lury and Jean Edouae» 

 Belangee. 



Displacements of lines in spectra of spots situated 

 at various distances from the center of the solar 

 disc: Ralph E. De Lury and J. L. O'Connor. 



Darlc nebulcE in the Orion and Sagittarius regions 

 photographed with tlie 100-inch Hooker tele- 

 scope: John C. Duncan. 



Note on the parallaxes of stars with large proper 

 motion: P. W. Dyson. 



The mass of Neptune: W. S. Eichelberger and 

 Arthur Newton. 



Tlie probable absence of a measurable electric field 

 in sun-spots: George E. Hale. 



Mars 19S0: George Hall Hamilton. 



Th-e spectroscopic system of a Scorpii: F. Hbnbo- 

 teau. 



Some remarJcs on Cepheid variables: Frank C. 

 Jordan. 



A remarkable meteor trail: Frank C. Jordan and 

 Keivin Burns. 



Approximate orbit and absolute dimensions of S 

 Antli<E : Alfeed H. Joy. 



Some recent results in photographic photometry: 

 Edward S. King. 



Notes on observations of nebulw: C. O. Lampland. 



A computation of the solar motion from the radial 

 velocities, proper motions, and spectroscopicaUy 

 determined parallaxes of 762 stars: E. S. Man- 

 son, Jr. 



The orbit of J Centauri. Preliminary note on v 

 Sagittarii: Antonia C. Maury. 



Progress in radial velocity observations of long- 

 period variables: Paul "W. Merrill. 



Parallaxes of seventy-three stars : John A. Millbb. 



The new electric driving clock of the photograpMa 

 telescope of the U. S. Naval Observatory: George 

 Henry Peters. 



Preliminary parallax of the Pleiades: John H. 

 Pitman. 



