207 



7160 



7080 



MAGNITUDE. 



PHOTOMETRIC CATALOGUES. 



Gaultier, Eugene Ch. Catalogue 

 annuel des grandeurs photographiques 

 de 300 etoiles des Pleiades. Paris, Bid. 

 soc. astr. France, 1901, (-491-498). 



Gore, J[ohn] E[llard]. The Bright- 

 ness of Starlight. Knowledge, London, 

 24, 1901, (177-178). 



Changes in the Stellar 



Heavens. ObservatoiT, London, 24, 



1901, (50-52). 



■ Changes in the Stellar 



Heavens. Observatory, London, 25, 



1902, (54-55). 



Eapteyn, J[acobus] C[orneliiLs]. On 

 the luminosity of the fixed stars, 

 Amsterdam, Proc. Sci. K. Akad. Wet. 

 3, 1901, (658-689) (English) ; Amster- 

 dam, Versl. Wis. Xat. Afd. K. Akad. 

 Wet. 9, 1901, (713-744) (Dutch). 

 [71GU]. 



Merecki, R Sui- la Xova Persei. 

 (Polish). Wszechswiat, Warszawa, 20, 

 1901, (350-351). [7600 8300 7120]. 



Newcomb, Simon. . . Limiting 

 ilaguitudes of the Cape Photographic 

 Durchmusterung. Astr. J., Boston, 

 Mass., 21, 1901, (153-155). 



Pickering, Edward C[harles]. A 

 Photometric Durchmustenmg. . . . 

 obtained with the Meridian Photometer. 

 . . . 1895-1898 (Review). Nature, 

 London, 64, 1901, (257-259). 



. . . Stars of the ilag- 



nitude 7.5 and Brighter, North of De- 

 clination 40°. . . Cambridge, Mass., 

 Ann. Obs. Harvard Univ., 45, 1901, 

 (1-330). 



Wirtz, Carl W. Photographisch- 

 photometrische Untersuchungen. Astr. 

 Nachr., Kiel, 154, 1901, (317-362). 

 [2400 7600 3350 F 0500]. 



7120 COLOUR (INTEGRATED 

 LIGHT). 



COLOUR CATALOGUES. 

 e.g. RED STARS. 



SPECTRUM (See 8000)- 



Merecki, R. Sur la Nova Persei. 

 (Polish). Wszechswiat, Warszawa. 20, 

 1901, (350-351). [7000 8300 7080]. 



7140 RADIATION (BOL(JMETUV) 



Bemporad, A. SuUe teoria d'estin- 

 zione di Bouguer. Mem. Soc. spettro- 

 scop. ital, Catania, 30, 1901, (217-236). 



Hkholm, Nils. Ueber den Energie- 

 Vorrath, die Temperatur und Strahlung 

 der Weltk6rper(1900). Stockholm, Vet. 

 Ak. Bih. 26, 1, 1901, No. 1 (73). [42(X)]. 



Nichols, E. F. On the Heat Radia- 

 tion of Arcturus, Vega, Jupiter, and 

 Saturn. Chicago, lU., Astroph. J. Univ. 

 Chic, 13, 1901, (101-141, with pi.). 

 [6060 6160]. 



Wilsing, J. Ueber die Erhaltung der 

 Euersie der Sonnenstrahhmg. Astr. 

 Nachr.. Kiel, 154, 1901, (429-436;. 

 [4200 F 0940 C 2400). 



7160 DISTRIBUTION OF FIXED 

 STARS IN HEAVENS. 



Bums, Javin J. Star-gauging by 

 Photograijhv. London, J. Brit. Astr. 

 Ass., 12, 1902, (75-77j. 



Apparent Thinning-out of 



the Stars. Loudon, J. Brit. Astr. Ass., 

 11, 1901, (350-3511. 



Apparent Thiiming-out of 



the Stars. London, J. Brit. Astr. Ass. 

 12, 1902 (130-133, 185-186). 



The Distribution of th 



Stars. London, J. Brit. Astr. Ass., 12, 

 1902, (176-178). 



Easton, C. Eiue neue Theorie iiber 

 die Milchstrasse. Gaea, Leipzig, 37, 

 1901, (27-39, mit 1 Taf.). [F 900]. 



Gore, J[olm] E[llard]. Apparent 

 Thimiing.out of the Stars. London, J. 

 Brit. Astr. Ass., 12, 1902, (129). 



Kaptejrn, J[acobu6] C[ornelius]. [On 

 tlie (listril)ution of stars of determined 

 linuinositv.] Amsterdam, Proc. Sci. K. 

 Akad. Wet. 3, 1901, (,658-689) i l!:nglish): 

 .Vmstcrdam, Vers]. Wis. Nat. -Vfd. K. 

 Akad. Wet. 9. 1901, (713-744) (Dutch). 



Newcomb, Simon. On the Cordoba 

 Durciunusterung and Some Conclusions 

 derived from it. Astr. J., Boston, 

 Mass., 22, 1901 (21-26). [7020 7050]. 



