770 ASTRONOMICAL 



Sun — Continued. 



. Kecherches stiv ratniosphiTe solaire. C'ompt. Kond. 114 : 1406. 1892. 



IIahzkr (P.) Rotationsbewcgiing der Sonne Astron. Nacbr., 127: 17-34. 1891. 

 Kedzie (J. H.) Speculations, solar beat, gravitation, and snn spots. 2d od. 



[5+75 p.] 8vo. Cbicago, 1891. 

 Maunder (E. W.) Solar activity in 1890, J. Brit. Astron. Assu., 1 : 321-5. 1891 . 

 SiDGKEAVKs (W.) Solar disturbances of July, 1892, aud tbe accompanying 



magnetic storms. Astron. and Astropbys., 11:817-9. 1892. 

 Tkouvelot (E. Tj.) riionomeue lumineux extraordinaire observe sur le soleil. 



Compt. Rend. 112:1419-21. 1891. J/so, Reprint. 

 Wir.sixi; (J.) Rotationsgesetz der Sonne und liber die Periodicitiit der Sonneu- 



tlecke. Astron. Nacbr., 127 : 233-52. 1891. 

 WoLFKR (A.) Comptes rendns des travanx de . . . R. Wolf dans la domaine 



de la pbysique solaire. Arcb. d. Sc. Pbys. et. Nat. Geneva, Dec, 1891. 

 i.Vi!. Astrou. Jour., 11: 120. 1892. 



Sun-dials. 



GuiLLAUME (C. E.) Cadrans solairesportatifs. il. L'Astron., 11 : 383-9. 1892. 



Sun (Diameter of). 



ArwERs (A.) Sonnendurcbmesser nnd der Vennsdurcbuiesser nacb den Beobacb- 

 tungen an den ITelionietern der deutscben Venus-Expeditiouen. Astron. 

 Nacbr., 128 : 361-76. 1891. 



Sun (Rotation of). 



DuNER (N. C.) Recbercbes snr la rotation du soleil. 78 p. 4to. Upsal, 1891. 

 Rev. by Scbeiner (J.) Vrtljsclir. d. Astroii. Gesellscli., 27:36-51. 1892. 



Sun spots. 



Bhown (E.) Note on tbe recent large groups of sun spots, il. ,J. Brit. Astron. 

 Assn., 2:210. 1892. 



[Christie (W. H. M.)] On tbe large sun spot of 1892, Feb. 5-18, and Tbe asso- 

 ciated magnetic disturbance. Montb. Not., 52: 354-7. 1892. 



CORTIE (A, L.) Large sun-spot group of Aug. 38-Oct. 4, 1891. Obsry., 14: 

 363-6. 1891. 



. Spectra of sun s])ots between B and D. .1. Brit. Astron. Assn., 1: 175-84. 



1891. 



. Notes on tbe spectra . . . Astron. aud Astropbys., 11 : 587-93 



Crew (H.) Spectrum of tbe large sun-spot group of February, 1892. il. Astron. 

 and Astropbys., 11 : 308-10. 1892. 



Fenyi (J.) Pbenomena observed on tbe great spot-group of February, 1892. il. 

 Astron. and Astropbys., 11 : 430-3. 1892. 



Hale ((t. E.) Spectroscopic observations of tbe great sun-spot grou]) of Feb- 

 ruary, 1892. il. Astron. aud Astropbys., 11: 310-4. 1892. 



Landeuek (J. J.) Mcsure des coordouuees lit51iograpbi(jues des tacbes solaires. 

 il. L'Astron, 10:231-5. 1891. 



Maunder (E. W.) Earlier appearances of tbe great s])ot-group of February, 

 1892. .T. Brit. Astron. Assn. 2: 386-9. 1892. 



. Note on tbe bistory of tbe great sun spot of 1892. February. Miuitli. 



Not., 52: 484-93. 1892. 



Perkin.s (T.) Modified metbod of using Tbomsou's disks, il. .1. Brit. Astron. 

 Assn., 1:492-5. 1891. 



SCHMOUU (A.) Dernier minimum des tacbes solaires. L'Astrou., 10: 383-91, 

 409. 1891, 



Trouvelot (E. L.) Cbute d'une protuberance solaire dans Touverture d'uue 

 tache. L'Astron,, 10: 407, 1891, ^-IZso; Compt, Rend., 113:437. 1891. 



. Fall of a scdar prominence into tbe opening of a spot. Astron. and Astro- 

 pbys., 11 : 124. 1892. 



