210 RECORD OF SCIENCE FOR 1887 AND 1888. 



Refraction. 



GuUEY (L.-J.) Sur uno fornio g6oii)6trique flea effets de la r6fraction dans le 



niouveiiient diurnc. Bull, astroii., 5: 91, 19;5. 

 SciiAKBEiiLE (J. Mi) Note ou a short method for computing the true lefractions. 



Astroii.Nachr., 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 nebula3 ami clusters of stars. By J. L. E. Dreyer. 



Saturn. 



Elgeu (T. G.) Physical observations of Satnru in 1838. il. Mouth. Not., 48: 



362-370. 



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



Keeler (J. E.) First observations of Saturn with the 36-inch equatorial of the 



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

 Perrotix (J.) Auneanx de Saturue. Compt. Rend., 106 : 1716. 

 Terby (F.) [Dessius des auneanx et des baudes.] il. Obsry., 11: 19.5. 

 . Premieres observations de Mars et de Saturne faites a I'observatoire Lick. . . 



en 1888, et r6ponses :\ quelques objections. Ciel et Terre, 9: 370-380. 

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



Saturne. Coinpt. Rend., 106: 464-467. Also, 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. Jonr., 8 : 57-02. 



Lynn(W.T.; Di-scovery of Titan. Obsry., 11 : 336. 



Newcomb (Simon). Mutnal 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. Not., 49: 54-64. 

 Struve (II.) Beobachtnngen der Saturns-trabanten. Abtheilung I. Beobach- 



tungeu am 15-zolligen Refractor. 132 p. 4to.' St. Petersburg, 1888. . . (M. 10.60) 

 Supplement 1 aiix observations do Poulkova. 



Scintillation. 



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



Ineluexce des bourrasques sur la scintillation des dtoiles. Ciel et Terre, 9: 



489-494. 

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

 MoxTiGNY (C.) Do l'iutensit6 de ia scintillation des iStoiles daus les diff^rontes 



parties du ciel. Bruxelles, las'*. 



Ixcpr.from : Bull. Acail. roy. do Bel^'., 3. s., IG. 



Abstr: Astrou.Nachr., 120: 22.3. Also.abstr.: Ciel et Terre, f): 393-400. 

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



120: 109. 

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

 Weyer (G. I). E.) Sternschwaukou. Astron. Nachr., 119: 143. 

 Sextant. 



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

 Gruey(L.-J.) Application de Tocnlaire nadiral i\ la d^terminatiou des con- 



stautes de I'horizon gyroscopicpie. Compt. Rend., 106: 727-729. 

 SCHAEBERLE (J. M.) Adjustment of tlio soxtant. Sid. Me8.,7: 223. 

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



Sirius. 



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



