BIBLIOGRAPHY OF ASTRONOMY: 1887. 29 



ijphemerides and almanacs — Continued. 



Nautical (The) almanac and astronomical ephemeris for tlic year 1891. 10 -f- 



514 + 16 p. 8vo. London, 1887. (2s. G(f.) 



Nautisches Jahrbuch oder Ephemeriden und Tafeln fiir das Jahr 1890 zur Bes- 



timmung der Zeit, Liinge und Breite zur See nach astronomischen Beobach- 



tungen. Hrsg. von Reichsamt des Innern. Berlin, 1887. (M. 1.50 ) 



equatorial. See, also, Illumination. 



Wolf (M.) Einfache Metliodo den Gang eines Triebwerks zu priifen. Astron. 



Nachr., 116 : 117. 

 Brrors. See Observations (Erroi*s of). 

 Ejudoxus. 



Ars astronomica, qualis in charta segyptica superest. Denuo edita a F. Bhiss. 



2-5 p. 4to. Kiliac, 1887. (M. 1.) 



Paculae, See, also. Sun (Statistics of faculaa, prominences, spots, etc., for 1886). 



Mascari (A.) Latitudine eliografiche e frequenza dei gruppi di facole brillanti 



durante il sessennio 1881-1886. Mem. soc. spettrscp. ital., 16 : 80-8.5. 

 Measures of positions and areas of spots and faculie ... on photographs taken 



... at Greenwich, in India, and in the Mauritius. Greenw. spectrscp. 



obsns. 1885 : 34-104. 

 Tacchini (P.) Facole solari osservate al regio osservatorio del collegio Romano 



nel 1886. Mem. soc. spettrscp. ital., 16 : 4-7. 



Observations solairesdudeuxiemeseraestre 1886. Compt. Rend., 104 : 216. 



Osservazioni di macchie e facole solari. [4« trimestre, 1886.] Atti d. r. 



accad. d. Lincei, s. 4. Rendic, 3 : 14. 



Same. 1* trimestre, 1887. Ibid., 265. 



Observations solaires faites a Rome pendant le premier trimestre de I'annee 



1887. Compt. Rend., 104 : 1082; 105: 210. 



Same. 2« trimestre. Ibid., 106 : 211. 



Same. 3® trimestre. Ibid., 1002. 



Macchie e facole solari osservate al regio osservatorio del collegio Romano 



nel 1« trimestre del 1887. Mem. soc. spettrscp. ital., 16 : 33-36, 54-57. 



Same. 2« trimestre. Ibid., 87-90. 



Same. 3« trimestre. Ibid., IIS. 



Fell (Charles). 



For Obituary, see L'Astron., 6 : 392. Also: Nature, 35 : 306 

 Pelldcker (Siegmund) [18167-1887]. 



"Wagxer ( — ) Todes-Anzeige. Astron. Nachr., 117 : 391. 

 Flexure. 



ScHAEBERLE (J. M.) Horizontal flexure of vertical circles. Astron. Nachr., 

 118: 147-152. 



Method for measuring the astronomical flexure in zenith di.stance for all 



positions of the instrument. Ibid., 147. 

 Fraunhofer (Joseph) [1787-1826]. 



Bauernfeind (C. M.) Gedachtnissrede auf J. von Fraunhofer zur Feier seines 

 100 Geburtstages. 30 p. 4to. Miinchen, 1887. (M. 0.80.) 



