November 17, 1916] 



SCIENCE 



725 



H. Shapley: Colors of the Brightest Stars in 



Seven Globular Clusters. 

 H. Shapley: Notes on the Spectra of Cepheid 



Variables. 

 Leon Campbell: Cooperation in Variable Star 



Observing. 

 J. Kunz and J. Stebbins: Progress in Photo- 

 electric Photometry. 

 P. H. Seares: The Color of the Polar Sequence 



Stars. 

 P. H. Seares: Distribution of Color in the 



Spiral Nebulae. 

 Edison Pettit: Circumstances of the Solar 



Eclipse of June 8, 1918. 

 E. P. Hubble: On the Variable Nebula N. G. 



C. 2261. 

 P. W. Very: Lunar and Terrestrial Albedoes. 

 P. W. Very: The Spherical Albedoes of the 



Planets. 

 L. A. Bauer: Note on the Rotation Periods of 



the Planets. 

 C. C. Crump: Preliminary Note on the Spec- 

 trum of Gamma Lyras. 

 H. N. Bussell: On the Capture of Comets by 



Planets. 

 P. W. Very : Examination of ' ' New Evidence ' ' 



on the Solar Constant. 

 P. W. Very: Planetary Evidence in Eespect to 



Solar Radiation. 

 P. W. Very: The Radiant Properties of the 



Earth from the Standpoint of Atmospheric 



Thermodynamics. 

 R. E. DeLury: The Effect of Haze Spectrum 



on Spectrographic Determination of the 



Solar Rotation. 

 R. E. DeLury: Note on a Supposed Variation 



in the Solar Rotation. 

 S. G. Barton: The Interrelations of the As- 

 teroid Elements. 

 H. N. Russell: The Visibility of Jupiter by 



Daylight. 

 E. E. Barnard: A Small Star with the Largest 



Known Proper Motion. 

 W. W. Campbell, J. H. Moore: The Spectral 



Type and Radial Velocity of Barnard's 



Proper Motion Star. 

 P. G. Pease: Rotation and Radial Velocity of 



the Spiral Nebula N. G. C. 4594. 

 C. O. Lampland: Measurements of the Spiral 



Nebulas N. G. C. 4254 and 5194 for Motion. 

 H. D. Curtis : Porms of Planetary Nebulas. 

 Eric Doolittle: An Extension of Burnham's 



Catalogue of Double Stars. 

 J. A. Parkhurst: The Bases of Photographic 



Stellar Magnitudes. 



47. Sarah P. Whiting: Diaries of the Tulse Hill 



Observatory. 



48. V. M. Slipher: Spectrographic Observations of 



Nebulas. 



49. W. W. Campbell and J. H. Moore: Spectro- 



graphic Observations of Motion in the 

 Planetary Nebulas. 



50. V. M. Slipher: Spectral Evidence of a Per- 



sistent Aurora. 



51. C. E. St. John, Louise W. Ware: Systematic 



Errors in Rowland Table for Close Pairs of 

 Solar Lines. 



52. C. E. St. John: On the Mutual Repulsion of 



Solar Lines. 



Abstracts for these papers are given in a some- 

 what fuller report of the meeting in the current 

 numbers of Popular Astronomy, and only the main 

 lines of the papers are commented on here. Those 

 which pertain to details of observation are pos- 

 sibly sufficiently well described by the title. 



It is very gratifying to hear from Professor 

 Brown that the printing of the New Lunar Tables, 

 computed along the lines of his complete Lunar 

 Theory, is progressing rapidly, and that in the 

 Ephemerides for 1923, we will, for the first time, 

 have the results from them. 



In the report by Miss Cannon on the peculiar 

 spectra found in the observations for the new 

 Draper Catalogue, we find that this catalogue, 

 which is to be of immense service, also is nearing 

 completion. 



Mr. Olivier, following lines laid down by 

 Schiaparelli, points out a new coincidence between 

 a meteoric system and a comet's orbit. 



Papers were presented by Miller, Steele, Pit- 

 man, Pox and Mitchell, dealing with stellar paral- 

 lax results. Pew movements in American astron- 

 omy are progressing more favorably than the cam- 

 paign for extension of our knowledge of stellar 

 distances. Many observatories are taking part in 

 the campaign, and all are now contributing results. 

 Prom the Sproul Observatory was a report on the 

 parallax of 64 objects; the University of Vir- 

 ginia reported on the parallax of 96 stars; the 

 Dearborn Observatory on 4 stars. 



The paper of Mr. Adams was also of interest 

 from the stellar parallax point of view, in that he 

 here gives results from his very original and im- 

 portant spectroscopic method of estimating 

 stellar distances. 



Spectroscopists in general will be interested in 

 the work of Burns, Meggars, and Merrill, who are 

 extending the determinations, by interference 

 methods, of wave-lengths of lines spaced at short 

 intervals through the spectrum which may well be 



