Descriptive Astronomy. 



4570 Distribution of energy in 

 spectrum. 



Hertzsprimg, Kjnar. Vergleich eiuiger 

 spektral] hotoinetrisclieii Resultate. Phv- 

 sik. Z^., Leipzig, 5, 1994, (34). 



Turmlirz, O. Spektral phutometriscLe 

 Uesiihate [von E. Hertzsprunp]. Physik. 

 Zs, Leipzig. 5, 1904, (15C-157\ 



ICl 4650 



Buss, Albeit Alfred. Solar promi- 

 nences during June, etc. Engl. SJech., 

 London. 79, 1904, (.:03, .'25, C03-C04} ; 

 80, 1UU5, (135, 2u5-20r., 364-3C5j. 



Catania, OBservatorio. Immagini spet- 

 troscopidie del bordo solare osservate 

 a Catania, Ifouia e Zurigo nei mesi di 

 aprile, maggio e giugno ISOl (1 tav.). 

 Catania, ilem. Soc. spettroscop. ital., 

 32, 1903, 1» dispensa. 



4580 Teiruric lines. 



Intensit}- of atmospheric lines in the 

 -olar spectrum. Cambridge, Mass., 

 Ann. Obs. Harvard Coll., 48, [1904?], 

 ([207]-219). 



Mitchell, S. A. The new gases neon, 

 argon, kr\-pton and xenon in the chromo- 

 sphere. [With bibliography.] Astroph. 

 J., Chicago, 111., 17, 1903, (224-228). 



4600 SPECTROSCOPIC 



RESEARCHES OF SL'RFACE 

 WITHOUT ECLIPSE. 



Locky^r, William J. S. A. new epoch 

 in solar phvsics. Nature, London, 69, 

 1904,(008-612). 



4610 Spot?. 



Gertie, A. L. The spectra of smi- 

 ->|jot.s. [Abstract.] Observatory. London, 

 27. 1904, (306-30S). 



Fowler, A. Observations of the spectra 

 of sun-six)ts, regions C to D. Loudon, 

 Mon. Not. R. Astr. Soc, 65, 1905, (205- 



Lockyer, Noi-man. On the relation 

 between the spectra of sun spots and 

 stars. London, Proc. R. Soc., 74, 1905, 

 (53-54) ; [reprint] London, Mon. Not. R. 

 Astr. Soc, 64, 1904, App. 4, ([55]-[5r,i) ; 

 [abstract] Nature, London, 70, lUOl, 

 (261-262). 



WUson, W. E. On the temperature 

 cif sun-spots and the spectrum of an 

 artiticial one. London, Mon. Not. R. 

 Astr. Soc , 65, 1905, (224-227, with pi.). 



4630 Chromosphere. 



LoXKiiN, RnV.AI. ASTKoNoMIf'U. SoclKTV, 



Council of. Solar activity in 11)04. 

 London. Mon. Not. Astr. Soc, 65, 1905, 

 (392-393). 

 (E-9052) 



Immagini spettroscopiche 



del bordo solare osservate a Catania, 

 Roma e Zurigo uei mesidi giugno, luglio 

 e agosto 1901 (1 tav). Catania, Mem. 

 Soc. spettroscop. ital., 32, 1903, <5' 

 dispensa. 



Cortie, A. L. Eleventh report of the 

 section for the observation of the Sun. 

 London, Mem. Brit. Astr. Ass., 13, 1905, 

 (25-04, with pi.). 



Donic, N. N. Essai d 'etude de la 

 chromosphere en dehors des eclipses de 

 soleil avec un spectrographe a fente 

 circulaire. St. Peterburg, Bull. Ac. So., 

 (Ser. 5), 19, 1903,(171-186, av. 3 pi.). 



Essais d'etude de la 



chromosphere en dehors des eclipses de 

 soleil avec un spectrogiaphe a fente 

 circulaire a Evian-les-Bains (Haute- 

 Savoie) et a I'observatoire Janssen du 

 sommet du Mont-Blanc. St. Peterburc, 

 Bull. Ac. Sc, (Ser. 5), 19, 1903, (19o- 

 207). 



KUlip, Robert. Solar prominences and 

 Thorps gratings. London, J. Brit. Astr. 

 Ass., 14, 1904, (246-248). 



Mascari, Antonino. Protuberauze 

 solari osservate al R. Osservatorio di 

 Catania nell'anno 1902. Catania, Mem. 

 Soc-. spettroscop. ital., 32, 1903, (135- 

 142). 



4640 Deteimination of Rotation. 



Halm, .1. .S] ci trosi oj)ic observations 

 of the rotation of tiie huu. Edinbnrgii, 

 Trans. R. Soc, 41. 1904, (89-104). 



4650 SPECTROSCOPIC 



i;i >i:arches of sun in 



ECLIPSE. 



Donid, X. Sur lYtat des envilopjvs 

 du soleil a repo<|ue du dernifrminiminn 

 de son activity. St. Peterburg Bull. Ac. 

 Sc, (ser. 5), 18, 190.3.^95-111). 



