ASTRONOMY. 181 



Solar system — Continncd. 



Keiik(F. ): Eiitstehung der Korpor, welche sich uiii diti Souue bewegon. 79 p. 



8vo. Leipzig, 188() (M. 1.80) 



TUKXKK (H. 11.): Note ou Mr. Maith's "iutersects." il. Month. Not., 46 : 157. 

 Vail (J. N.) : The earth's annular system. 400 p. T2mo. Cleveland, 1886. (M. 10) 



Solar system (Motion of), p* 126. See, also, Stars (Motion of). 



Flammaiuon (C.) : Le point fixe dans I'nnivers. L'Astron., 5 : 241-2.51. 



FOLIE (F.): Note sur le mouvement du systiiine solaire. Astron. Nachr., 114: 



:i55. 

 HoMANN(H.): Bestiramnng der Bewegung des Sonnensystems dnrch Spectral- 



Messuugen. Astron. Nachr., 114: 25. 

 VON KovESLiGETHY (R.) : Bestimmung der Bewegung des Sonnensystems dnrch 



Spectral-Messungen. Astron. Nachr., 114 : 327. 



Spectra (Stellar), p* 113. 



Pickering (E.G.): Draper memorial photographs of stellar spectra, exhibiting 

 bright lines. Nature, 34 : 439, 570. 



Sherman (O. T.): Reply to certain questions raised before the Royal Astronom- 

 ical Society . . . [etc.]. Month. Not., 47: 14-18. 



Spectroscope. 



Hasselbeug (B.): Anweudung von Schwefelkohlenstoff-Prismen zu spectro- 

 scopischen Beobachtungen von hoher Pracision. 8vo. Leipzig, 1886. ' 



Zengek (K. W.): Neues geradsichtiges Spectroscop ohne Spait und ohne Colli- 

 matorlinse. Ztschr. f. Instrmknd., 6: 59. 



Spectrum analysis. 



Janssen(J.): Spectres d'absorption de I'oxygfeue. Corapt. Rend., 102 : 1352. 



Langley (S. p.) : Experimental determination of wave-lengths in the invisible 

 prismatic spectrum. Mem. Natl. Acad. Sc, 2: 149-162, 1885. 4 pi. 



: Observations on invisible heat spectra and the recognition of unmeasured 



wave-lengths, made at the Allegheny Observatory. Phil. Mag., 5. s., 21: 394-409. 



: On hitherto unrecognized wave-lengths. Am. J. Sc, 3. s., 32 = 132: 83-106. 



4 pi. 



: Sur des longueurs d'onde jusqu'ici non reconnues. Compt. Rend., 102: 



162-164. 



Smyth (C. Piazzi) : Micrometrical measures of gaseous spectra under high dis- 

 persion. Trans. Roy. Soc.Edinb., 32: 415-480. 30 pi. 1886. ^?so, Reprint. • 



Spectrum (Solar), p^ 126. 



CORNU (A.): fitude des baudes telluriques a, B, et A du spectre solaire. 105 p. 



8vo. Paris, 1886 • (M. 2.50) 



• IIasselberg (B.): Methode propre a determiner avec grande precision les lon- 

 gueurs d'onde des raies ultra-violettes du spectre solaire. Mem. Soc. spettrosc. 

 ital., 15 : 127-133. 

 Muller (G.) and Kempp (P.): Bestimmung der Wellenlangen von 300 Linien im 



Sonnenspectrum. 4to. Leipzig, 1886 (M. 12) 



In. Pub. astrophys. Obs. zu Potsdam, Ed. 5. 



: Neuberechnung der 2,614 in Publication Nr. 3 des astrophysicali- 



schen Observatoriums zu Potsdam bestimmten Wellenliingen. 4to. Leipzig, 



1886 (M.l) 



Pickering (E. C.) : Comparison of maps of the ultra-violet spectrum. Am. J. Sc, 

 132: 223-226. 



Spherometer. 



Mayer (A.M.): On the well-spherometer, an instrument that measures the 

 radius of curvature of a lens of any linear aperture, il. Am, J. Sc, 3. s., 32 = 

 132 : 61-69. 



