298 



SCIENCE 



[Vol. LV, No. 1420 



Eeeeived from finance com- 

 mittee, Berkelej- 92.87 



Annual disbursements 1,687.42 1,404.63 



New members enrolled 37 55 



Total enrollment at end of j'ear 1,000 990 



W. W. Sargeant, 

 Secretary-Treasurer 



THE AMERICAN ASTRONOMICAL 

 SOCIETY 



The twenty-seventli meeting of the society 

 was held at the Sproul Observatory, Swarth- 

 more College, Swarthmore, Pennsylvania, from 

 December 29' to 31, 1921. This was the second 

 time that the society had met at Swarthmore in 

 five years, and the meeting was well attended, 

 about sixty members and guests being present. 

 Social events included a reception by Presi- 

 dent and Mrs. Aj^delotte, and a special pro- 

 gram was arranged for the second evening, 

 when the society was privileged to listen to an 

 address by Dr. William Romaine Newbold, pro- 

 fessor of philosophy in the University of Penn- 

 sylvania, on the subject "Evidence contained 

 in the Voynich Manuscript that Roger Bacon 

 possessed a Telescope." There was also an 

 exhibit of views of the life and surroundings 

 at some of the large observatories. Sessions 

 for papers were held on three days. 



The schedule of meetings of the society, in 

 the near future, was announced as follows : 

 September, 1922, Yerkes Observatory; Decem- 

 ber, 1922, Cambridge and Boston; September, 

 1923, Mt. Wilson Observatory; December, 

 1923, Vassar College. 



The program of papers was as follows : 

 Spectroscopic notes on some variable stars: 



Walter S. Adams and A. H. Jot. 

 Partial explanation, hy wave-lengths, of the K- 



term in the B types: Sebastlan Albrecht. 

 Possible periodicity in mean sun-spottedness : 



DiNSMOEE Alter. 

 Demonstration apparatus for descriptive astron- 

 omy class: DiNSMORE Alter. 

 On absolute magnitudes: Benjamin Boss. 

 The moon's motion; a postscript: Ernest W. 



Brown. 

 Median parallax; a statistical method: Keivin 



Burns. 

 Resume of results bearing on the absolute magni- 

 tudes of the stars: Heber D. Gtjrtis. 

 Changes in the spectrographic elements of Y 

 Sagittarii: John C. Duncan. 



On the daily variation in clocJc corrections: 

 W. S. Eichelberger and H. E. Morgan. 



A new orbit of Neptune's satellite: W. S. 

 Eichelberger and Arthur Newton. 



Stellar parallaxes determined at Dearborn Ob- 

 servatory: Philip Eos. 



A test of two methods of measuring parallax 

 plates: Jennie V. France. 



The use of the stereo-comparator in determining 

 proper motions: Caroline E. Furness. 



Daylight observations with a transit circle: J. C. 

 Hammond. 



Daily variation in clock corrections and rates: 

 J. C. Hammond. 



Boulenge and Aberdeen chronographs: Henry B. 

 Hedrick. 



Kepler's problem for the higher planetary eccen- 

 tricities: Herbert A. Howe. 



The latitude of JJkiah and the inotion of the 

 pole: Walter D. Lambert. 



Preliminary discussion of the correction to the 

 constant of nutation from day and night ob- 

 servations in declination of a Lyrce: Eleanor 

 A. Lamson and Geo. A. Hill. 



The discovery of faint nebular structure around 

 a Aquarii: C. O. Lampland. 



The masses of binary stars: John A. Miller and 

 John H. Pittman. 



Comparison of McCormicTc trigonometric paral- 

 laxes with spectroscopic: S. A. Mitchell. 



The position of Neptune's equator: Arthur 

 Newton. 



The orbit of comet 1788 II: Margaretta Palmer. 



On the orbital eccentricity of binary stars o, 

 very long period: Henry Norris Eussell. 



Barium and lithium in the sun: Henry Norris 

 Eussell and K. T. Compton. 



Four eclipsing variables observed by Moffmeister : 

 Bancroft Walker Sitterly. 



Increased ionization over solar faculce: CHARLEt^ 

 E. St. John. 



The spectrum of Venus; no oxygen or water 

 vapor lines present: Charles E. St. John and 

 Seth B. Nicholson. 



A comparison of star positions derived with the 

 doublet with the P. G. C: Frank Schlesingei:. 



Report of stellar investigations : Harlow Shap- 

 ley. 



Differential refraction on astronomical photo- 

 graphs: Frederick Slocum. 



Notes on variable stars: Joel Ste:!bins. 



The proper-motions of 154 red stars: Ealph E. 

 Wilson. 



Joel Stebbins, 



Urbana, Illinois. Secretary 



