n" ""r ° F SciENCESl BIBLIOGRAPHY 23 



Self-luminous night haze. Proceedings of the American Philosophical Society, vol. 50, 1911, pp. 246-253; vol. 

 58, 1919, pp. 223-235. 



THE GEQENSCHEIN 



Observations of the Gegenschein or zodiacal counterglow. Sidereal Messenger, vol. 2, 1883, p. 254; vol. 4, 1885, 

 p. 30. Astronomical Journal, vol. 7, 1888, p. 186; vol. 11, 1891, p. 19; vol. 13, 1893, p. 169; vol. 17, 1897, 

 p. 151; vol. 20, 1899, pp. 131-132. Popular Astronomy, vol. 1, 1894, p. 337; vol. 7, 1899, pp. 169-179, 

 290; vol. 26, 1918, p. 561; vol. 27, 1919, pp. 109, 289; vol. 29, 1921, p. 149. 



MISCELLANEOUS 



Introduction to "The Science-History of the Universe," by Waldemar Kaempffert (Current Literature Publish- 

 ing Co., New York), 1909, pp. IX-XVI. 



Astronomical coincidences. Astronomische Nachrichten, vol. 144, 1897, p. 331; vol. 145, 1898, p. 237. Sidereal 

 Messenger, vol. 10, 1891, p. 18. 



A few astronomical events of the past fifty years. Popular Astronomy, vol. 24, 1916, pp. 479-487. 



Focal length of the 40-inch telescope of the Yerkes Observatory. Astronomical Journal, vol. 31, 1917, p. 24. 



Lewis Swift. Astronomische Nachrichten, vol. 194, 1913, pp. 133-136. 



Sherburne Wesley Burnham. Popular Astronomy, vol. 29, 1921, pp. 309-324. 



REVIEWS 



Burnham. General Catalogue of 1290 Double Stars. Astrophysical Journal, vol. 12, 1900, pp. 228-236. 



Pickering. The Moon. Astrophysical Journal, vol. 20, 1904, pp. 359-364. 



Wolf. Die Milchstrasse. Astrophysical Journal, vol. 29, 1909, pp. 89-90. 



Chambers. The Story of the Comets. Astrophysical Journal, vol. 31, 1910, pp. 92-94. 



Wolf. Stereoscopbilder von Sternhimmel. Astrophysical Journal, vol. 44, 1916, pp. 131-135. 



Aitken. The Binary Stars. Publications of the Astronomical Society of the Pacific, vol. 31, 1919, p. 170-176. 



WASHINGTON : GOVERNMENT PRINTING OFFICE '.1926 



