210 RECORD OF SCIENCE FOR 1887 AND 1888. 



Refraction. 



GuUEY (L.-J.) Siir lino fornio gdoiii^triqne des effets tie la refraction dans le 



niouveuient diiirnc. Bull, astron., 5: 91, 193. 

 ScHAEBEHLE (J. M.) Noto ou a slioit iiietliod for computing the true lefractions. 



Astron. Nacbr., 118: 381. 

 TuTTLE (H. P.) Bessel's "log B" for great elevations. Sid. Mess., 7: 406. 

 Royal Astronomical Society. 



Memoiks . . . vol.49,pt.l. 237 p. 4°. London, 1888 (M.21) 



New general catalogue of nebiilsB and clusters of stars. By J. L. E. Dreyer. 



Saturn. 



Elger (T. G.) Physical observations of Saturu in 1883. il. Montb. Not., 48: 



362-370. 



. [Observations of rings aud belts.] Obsry., 11: 153. 



Keeler (J. E.) First observations of Satnrn with the 3(;-iuch equatorial of the 



Lick Observatory, il. Sid. Mess., 7: 79-83. 

 Perrotin (J.) Auueaux de Saturuo. Couipt. Rend., 106 : 1710. 

 Terbv (F.) [Dessius des anneaux et des bandes. ] il. Obsry., 11: 19o. 

 . Premieres observations de Marset de Saturne faitesiil'observatoire Lick. . . 



en 1888, et rdponses i\ quelques objections. Ciel et Terrc, 9: 370-380. 

 Trouvelot (E.-L.) Nouvelles observations sur la variabilit6 des anneaux de 



Saturne. Compt. Rend., lOG: 464-467. J /.so, Reprint. 



Saturn (Satellites of). 



Hall (A.) Motion of Hyperion. Astron. Jour., 7: 164. 



Hill (G. W.) Motion of Hyperion and the mass of Titan. Astron. Jour., 8 : 57-62. 



Lyxn(W.T.) Discovery of Titan. Obsry., 11 : 338. 



Newcomb (Simon). Mutunl action of the satellites of Saturn. Astron. Jour., 



8: 105. 

 OuDEMAXS (J. A. C.) Retrogradation of the plane of Saturn's ring and of those of 



his satellites whose orbits coincide with that plane. Month. Nor., 49: 54-64. 

 Struve (H. ) Beobachtungen der Saturns-trabanten. Abtheilung I. Beobach- 



tnngen am 1.5-z6I]igpn Refractor. 132 p. 4to. St. Petersburg, 1888. .. (M. 10.60) 

 Supplement 1 aux ob.sorvatious dr Poulkova. 



Scintillation. 



CoLE.MAN (W.) .Jumping stars. Obsry., 11 : 434. 



Influence des bourrasqnes sur la scintillation des dtoiles. Ciel et Torre, 9: 



489-494. 

 Maw(W. H.) Jumping stars. Obsry., 11: 404. 



MoNTiGNY (C.) Do riutensi(6 de la scintillation des 6toiles dans les ditfdrentes 

 parties du ciel. Bruxelles, 1888. 



Hepr.from : Bull. Acad. roj-. do Bel^., 3. a., IG. 



Abstr: Astron. Kacbr., 120: 223. Also, abstr. : Ciel et Terro, 9: 393-400. 

 Searle (A.) Apparent instability of stars near the horizon. Astron. Nachr., 



120: 109. 

 Tknnant (J. F.) Jumping stars. Obsry., 11 : 433. 

 Weyer (G. D. E.) Sternschwankon. Astron. Nachr., 119 : 143. 

 Sextant. 



CoMSTOCK (G. C.) Adjustment of a sextant. Sid. Mess., 7 : 129-132. 

 Gruey(L.-J. ) Application do I'oculaire nadiral a la determination des con- 



stantes de I'horizou gyroscopique. Compt. Rend., lOG : 727-729. 

 SCHAEBERLE (J. M.) Adjustment of tho Sextant. Sid. Me8.,7: 223. 



. Eccentricity of the sextant. Astron. Nachr., 118 : 383. 



Sirius. 



Mann(N. M.) System of Sirius. Sid. Mess., 7 : 25, 94, 



