BIBLIOGRAPHY, BY TOPICS, OF THE PRINCIPAL SCIENTIFIC PAPERS OF 



EDWARD EMERSON BARNARD 



We are indebted to Miss Mary K. Calvert for the preparation of the following bibliography, 

 which has been arranged topically, and without giving the exact title of each paper. We 

 believe that it will be of more convenience to the user to have the articles on a given subject 

 grouped in this manner. A strict chronological order has not been followed in the arrange- 

 ment under each topic, but it seemed wiser to collect together the papers which appeared in 

 the same journal, and a regular order has been followed where a series of journals contained the 

 papers. Titles have not been given in full except for papers which were of a special impor- 

 tance or were of a general character and summed up Professor Barnard's studies in that 

 particular field, but many minor contributions and notes have not been included in this list. 



The reference " Monthly Notices " refers to the Monthly Notices of the Royal Astronomical 



Society of London. 



BOOKS 



Photographs of the Milky Way and of comets. Publications of the Lick Observatory, vol. 11. 



An atlas of the Milky Way (illustrated by fifty prints taken with the Bruce photographic telescope of regions 



north of 40° S. declination). In preparation for publication by the Carnegie Institution of Washington. 



Micrometric measurements in some of the globular star clusters. To appear in the Publications of the Yerkes 



Observatory. 



ARTICLES 



DOUBLE STARS 



Duplicity of /3 Capricorni. Astronomische Nachrichten, vol. 108, 1884, p. 369; vol. 110, 1884, p. 133. 

 Measures of the companion of Sirius. Astronomische Nachrichten, vol. 182, 1909, pp. 13-16; vol. 214 (Jubi- 



laumsnummer), 1921, p. 3. Astronomical Journal, vol. 20, 1900, p. 167; vol. 23, 1903, p. 132; vol. 26, 



1910, p. 143; vol. 27, 1912-1913, pp. 107, 193; vol. 29, 1915, p. 38; vol. 30, 1916, p. 24; vol. 30, 1917, p. 



182; vol. 32, 1919, p. 56. 

 Measures of the companion of Procyon. Astronomische Nachrichten, vol. 182, 1909, pp. 13-14. Astronomical 



Journal, vol. 19, 1898, pp. 23-24; vol. 20, 1899, p. 44; vol. 21, 1900, p. 16; vol. 23, 1903, p. 132; vol. 27, 



1912-1913, pp. 107, 194; vol. 30, 1917, p. 214. 

 On the hypothetical disturbing body in the system of 61 Cygni. Astronomische Nachrichten, vol. 172, 1906, 



pp. 379-384. 

 Micrometric measures of double stars. Astronomische Nachrichten, vol. 149, 1899, pp. 167-170; vol. 172, 



1906, pp. 383-384. Astronomical Journal, vol. 18, 1897, p. 46; vol. 19, 1898, pp. 23-24, 113-116; vol. 



20, 1900, p. 170. 

 On the parallax and proper motion of the double star Krueger 60. Monthly Notices of the Royal Astronomical 



Society, vol. 68, 1908, pp. 629-655; vol. 76, 1916, pp. 592-606. Astronomical Journal, vol. 21, 1900, p. 



64; vol. 23, 1903, p. 169. 



CLUSTERS 



Photographic determination of the colors of some of the stars in the cluster M 13 (Hercules). Astrophysical 

 Journal, vol. 12, 1900, pp. 176-181; vol. 29, 1909, pp. 72-75; vol. 40, 1914, pp. 173-181. 



Triangulation of clusters. Publications of the Astronomical and Astrophysical Society of America, vol. 1, 

 1899-1902, pp. 77, 193. 



Remeasurement of Hall's stars in the Pleiades. Popular Astronomy, vol. 27, 1919, p. 523. 



On the motion of some of the stars in the cluster M 92. Astronomische Nachrichten, vol. 176, 1907, pp. 17- 

 24; vol. 182, 1909, pp. 305-308. Popular Astronomy, vol. 18, 1910, pp. 3-7. Publications of the Astro- 

 nomical and Astrophysical Society of America, vol. 1, 1909, p. 323. 



Sur des grands mouvements propres soupconn^s dans les etoiles voisines de l'amas Messier 11«=N. G. C. 6705. 

 Comptes Rendus, vol. 161, 1915, p. 411. 



VARIABLE STARS 



Discovery of variable stars. Astronomical Journal, vol. 19, 1899, p. 193; vol. 29, 1916, pp. 75, 148; vol. 30, 

 1916, p. 4; vol. 30, 1917, pp. 84, 176; vol. 32, 1919, pp. 37, 48, 102. Astrophysical Journal, vol. 12, 1900, 

 pp. 182-184. 

 18 



