REPORT OF THE PRESIDENT, 1920. 25 



BIBLIOGRAPHY OF PUBLICATIONS RELATING TO WORK OF INVESTIGATORS. 

 ASSOCIATES. AND COLLABORATORS. 



Under this heading it is sought to include titles of all publications proceeding from work done 

 under the auspices of the Carnegie Institution of Washington, exclusive of the regular publica- 

 tions. A list of the latter which have appeared during the year will be found in the President's 

 Report (pp. 21-23). 



Abetti, Giorgio. See Joy, Alfred H. 



Adams, L. H., and E. D. Williamson. A note on the annealing of optical glass. (Papers on 



Optical Glass, No. 30.) Jour. Opt. Soc. Amer., vol. 4, 213-223 (1920). 



. See Williamson, E. D. 



Adams, Walter S., and Cora G. Bcrwell. The spectrum of Nova Ophiuchi, 1919. Astrophys. 



Jour., vol. 51, 121-126 (1920); Mt. Wilson Contr., No. 179. 



, and Alfred H. Joy. Nova Ophiuchi. Pubs. A. S. P. , vol. 31, 307-308 (1919). 



, . The spectra of two Algol variables of long period. Pubs. A. S. P., vol. 31, 308 



(1919). 



, . The spectrum of Nova Lyrse 1919. Pubs. A. S. P., vol. 32, 154-155 (1920). 



, . The spectrum of the companion to Castor and W. B. 16''906. Pubs. A. S. P., 



vol. 32, 158-160 (1920). 

 , . Changes in the spectrum of Omicron Ceti. Pubs. A. S. P., vol. 32, 163-165 



(1920). 



, . Helium lines in novae spectra. Obsen-atorj', vol. 43, 86-87 (1920). 



, , and GusTAF Stromberg. Radial velocities and parallaxes of additional stars 



in the Taurus group. Read at Seattle meeting, A. S. P. (1920); (Abstract) Pubs. A. S. P., 



vol. 32, 194-195 (1920). 

 , , . The spectra of some companions to stars of the B-type. Read at the 



Seattle meeting, A. S. P. (1920) (Abstract) Pubs. A. S. P., vol. 32, 195 (1920). 



Summary of spectroscopic parallax determinations. Read at Seattle 



meeting, A. S. P. (1920); (Abstract) Pubs. A. S. P., vol. 32, 195-196 (1920). 

 Albhecht, Sebastian. On progressive changes of the wave-lengths of lines in stellar spectra with 



change of type. Astrophys. Jour., vol. 50, 277. 

 Anderson, John A. The spectrum of electrically exploded wires. Astrophys. Jour., vol. 51, 



37-48 (1920) ; Mt. Wilson Contr., No. 178. 

 . Application of Michelson's interferometer method to the measurement of close double 



stars. Astrophys, Jour., vol. 51, 263-275 (1920); Mt. Wilson Contr., No. 185. 

 . Spectra of explosions. Proc. Nat. Acad. Sci., vol. 6, 42-43 (1920) ; Mt. Wilson Com- 

 munications, No. 65. 

 . The Michelson interferometer method for measuring close double stars. Pubs. A. S. P., 



vol. 32, 58-59 (1920). 



. The sun as a source of energy. Jour. Electricity, vol. 44, 201-302 (1920). 



Atjlt, J. P. Preliminary results of ocean magnetic observations on the Carnegie from Washington 



to Dakar and Buenos Aires, October 1919 to January 1920. Terr. Mag., vol. 25, No. 1, 



9-13 (Mar. 1920). 

 . Preliminary results of ocean macnetic observations on the Carnegie from Buenos Aires, 



South America, to St. Helena, February and March 1920. Terr. Mag., vol. 25, No. 2, 49-52 



(June 1920). 

 . Preliminarj- results of ocean magnetic observations on the Carnegie from St. Helena to 



Cape Town, thence to Colombo, Ceylon, April to June 1920. Terr. Mag., vol. 25, No. 3, 



117-122 (Sept. 1920). 

 Ayer, J. B. See Weed, L. H. 

 Babcock, Harold D. Note on the polarization of the north sky. Astrophvs. Jour., vol. 50, 



228-231 (1919); Mt. Wilson Contr., No. 171. 



. See St. John, Charles E. 



Banta, a. M., and Mary Gover. An analysis of the sexual modifications of an appendage in 



sex-intergrade Daphnia longispina. Anat. Rec, vol. 17, 348-349 (Jan. 1920). 

 Barnett, S. J. Note on electromagnetic induction and relative motion. (Abstract) Phys. 



Rev., ser. 2, vol. 15, No. 6, 527-528 (June 1920). 

 . A double solenoid for the production of uniform magnetic fields. Phil. Mag., vol. 



40, No. 238, 519-520 (Oct. 1920). 

 Barus, Carl. Example of torsional viscous retrogression. Proc. Nat. Acad. Sci., vol. 5, 



1-3 (1919). 



. Elongation due to magnetization. Proc. Nat. Acad. Sci., vol. 5, 267-272 (1919). 



. The interference of rapid \-ibrations chiefly in relation to telephone currents. Proc. 



Nat. Acad. Sci.. vol. 5, 331-340 (1919). 



Pressure variation of the specific heat of liquids. Proc. Nat. Acad. Sci., vol. 5, 340-344 



(1919). 



