BIBLIOGRAPHY OF ASTRONOMY: 1887. 51 



Scholl observatory. 



Kkrshxer (J. E.) [Equipment of the Daniel Scholl observatory, Lancaster 

 City, Penn.] Science, 9 : 462. 

 Scintillation. 



ExNER (K.) tJber die Scintillation. Eepert. d. Phys., 23: 371, 426. Also 

 Reprint. 



tJber die AufstoUung grosser Instrumente. Astron. Nachr., 117 ; 105. 



Sextant. 



CoRRiGAN (S. J.) Method of deriving the right ascension and declination of a 

 heavenly body from sextant observations, and its application to the determi- 

 nation of terrestrial longitude. Sid. mess., C: 175-188. Also,transl.: Eev. 

 d. obsrio., 2: 122, 135. 



Fleuriais (G.) Gyroscope-collimateur : substitution d'un repere artificiel a 

 I'horizon de la mer. il. 61 p. 8vo. Paris, 1887. 

 Repr.from: Rev. marit. et colon., Dec, 1886. 

 Thompson (C. W.) Manual of the sextant: containing instruction for its use 

 in determining time, latitude, and longitude, and the variation of the com- 

 pass'. 106 p. 8vo. London, 1887. (M. 6.30.) 

 Sirius. 



Lynx (W. T.) The alleged change in the color of Sirius. Obsry., 10: 104 

 194. 

 Sirius (Companion of). 



Hall (A.) Observations of the companion of Sirius, 1887. Astron. jour.. 7 : 99. 



Hough (G. W.) Observations . , . [1887]. Month, not., 47 : 478. 



Young (C. A.) [Observations 1887, Jan. 27 — Apr. 7.] Obsry., 10: 263. 

 Sky-glo'ws. 



IAbercromby (R.) Upper wind currents near the equator, and the dilfusion of 

 Krakatao dust. il. Nature, 36 : 85. 

 BuscH (F.) ijber die Dammerung, insbesondere iiber die glanzenden Erschein- 

 ungen des Winters 1883-84. 33 p. 4to. Arnsberg, 1887. (M. 1..50.) 



Fenomeni crepuscolari nel 1883 e 1884. Mem. soc. spettrscp. ital., 16 : 58-64. 

 Ricco (A.) Sopra i fenomeni crepuscolari del 1883 e del 1884. Ibid., 106-109. 

 Societe astronomique de France. 



[Constitution, by-laws, officers, etc.] L'Astron., 6 : 406-413, 462-468. Also: 

 Nature, 37 : 66. 



Solar system. See, also, Planets. 



Delauney (J.) Sur les distances des planetes au soleil, et sur les distances des 



Icometes periodiques. Abstr.: Compt. Rend., 105: 515 

 Ritter (A.) Untersuchungen iiber die Constitution gasformiger "VVeltkorper. 

 Repert. d. Phys., 20: 379-412. 1884. 

 Rev. by R. (R.) Bull, astron., 4: 199-206. 

 Struve (L.) Bestimmung der Constante der Praecession und der eigenen Be- 

 wegung des Sonnensystems. 34 p. 4to. Leipzig, [?] 1887. (M. 1.) 



M6m. acad. imp. d. sc. de St. Pfetersb. 7. s. 35, no. 3. 

 TissERAND (F.) Commensurabilite des moyens movements dans le systeme 

 solaire. Bull, astron., 4 : 183-192. Also: Compt. Rend., 104 : 259-205. 



