ACADEMY OP SCONCES.] ASTRONOMY. 51 



287. Wallace on life in the universe. 



Nation, New York, vol. 78 (Jan. 14, 1904): 34-35. 



Anonymous review. 



288. [Note on Pickering and photographs of the moon.] 



Nation, New York, vol. 78 (Jan. 28, 1904): 71. 

 Anonymous. 



289. Stars variable and compound. 



Good Words, Edinburgh, vol. 45 (Mar., 1904): 217-219. 



290. Remarks on the determination of the parallactic inequality of the moon. 



Mo. Notices R. Astr. Soc, vol. 64 (May, 1904): 570-571. 

 Dated, Washington, May 11, 1904. 



291. On the position of the galactic and other principal planes toward which the stars tend to 



crowd. 



Carnegie Institution of Washington Contributions to Stellar Statistics, Washington (June, 1904), 32 pp. 

 First paper. Publication No. 10. " Contribution to stellar statistics ," first paper. 



292. The extent ofthe universe. 



Harper's Mag., vol. 109 (Oct., 1904): 795-801. 



Also in Side-Lights on Astronomy (1906): 60-65; see no. 300 in this Section. 



Also in Scientific papers; physics, chemistry, astronomy, geology, with introductions, notes, and illustrations. 

 New York, P. F. Collier & Son, vol. 30 (1910): 323-326. 



293. On the eclipse of Agathocles. 



Mo. Notices R. Astr. Soc, vol. 65 (Dec. 9, 1904): 181-183. 

 Also in Pop. Astr., vol. 13 (Apr., 1905): 199-201. 



294. Aufforderung betr. Beobachtungen von Sternbedeckungen. 



Astr. Nach., vol. 167 (Jan. 17, 1905): cols. 79-80. 

 Dated, Washington, Dec. 13, 1904. 



295. Peters' catalogue. 



The Observatory, London, vol. 28 (Apr. and Aug., 1905): 1S5-186; 322, 



Letters dated Feb. 6 and June 12, 1905. 



296. Life in the universe. 



Harper's Mag., vol. Ill (Aug., 1905): 404-408. 



Also in Side-Lights on Astronomy (1906): 120-132; see no. 300 in this Section. 



297. An observation of the zodiacal light to the north of the sun. 



Astrophysical Jl., vol. 22 (Oct., 1905): 209-212. 



In the Journal, vol. 23 (Mar., 1906): 168-169 is a "Note on Professor Newcomb's observations of the 

 zodiacal light," by E. E. Barnard. This is followed by "Note by Professor Newcomb" (page 169). 



298. Note on the astronomical value of ancient statements of solar eclipses. 



Mo. Notices R. Astr. Soc., vol. 66 (Dec, 1905): 34-35. 

 This note is followed by comments on the noto by P. H. Cowell. 



299. A compendium of spherical astronomy with its application to the determination and 



reduction of positions of the fixed stars. 

 New York and London, Macmillan Co., June, 1906, 18-(-444 pp. 



" Tno present volume is the first of a projected series having the double purpose of developing the elements of Practical and 

 Theoretical Astronomy for the special student of the subject, and of serving as a handbook of convenient reference for the 

 use ofthe working astronomer in applying methods and formula?." Preface. 



The following is an extract from a letter of Sir Robert Ball concerning his work on spherical astronomy (Reminescences and 

 letters of Sir Robert Ball, edited by W. V. Ball, Boston, Little, Brown (1915): 161-162): "I have seen no notice of my book 

 except one in the Scotsman, and I have only had one letter on the subject which calls for any remark. It was from Professor 

 Newcomb, who, as you know, has recently published a book on the same subject. He wrote: 



"It is very interesting to notice how completely the purpose of your work differs from that of mine. You treat the subject 

 as an interesting branch of applied mathematics, while I have mostly in view the requirements of the working astronomer. 



"This extract will be a useful pellet, when I am accused, as of course I may be, of having stolen everything in the book, from 

 Newcomb's work. Had I not this, I should merely have had to fall back on the stupid fact that ninety-nine per cent of my 

 book was written before Newcomb's appeared. Tins bemg merely a truth would, of course, be no use in connection with 

 the average 'review,' " Compare no. 154 of this Section. 



About 1,020 copies of the work were printed and it is now out of print. 



Reviewed in The Observatory, vol. 29 (Sept., 1906): 366-368. 



Reviewed in Nature, vol. 74 (Aug. 16. 1906): 379-380, 



Reviewed in Jl. British Astr. Assoc., vol. 17 (Oct., 1907): 44-45. 



Reviewed in Phil. Mag., 6 s., vol. 15 (Apr., 1908): 570-571. 



