International Catalogue of Scientific Literature. 



(EJ ASTRONOMY 



PRIMARY DIVISIONS. 



BEGIN AT 



BIBLIOGRAPHY. HISTORY. GENERAL .. 0000 



SPHERICAL (GEOMETRICAL) ASTROXO MY .. 0100 



THEORETICAL ASTRONOMY AND CELESTIAL 



MECHANICS 1000 



PRACTICAL ASTRONOMY. INSTRUMENTS 



AND METHODS OF OBSERVATION.. .. 2000 



REDUCTION AND RECTIFICATION OF OBSER- 

 VATIONS 3000 



OBSERVATIONS. DESCRIPTIVE ASTRONOMY 



AND ASTROPHYSICS 4000 



Solar System . . . . . . 4000 



Moon 4800 



Earth {Geodei^y, etc.) .. 5000 



Planets, Comets. . . . 5500 



Stellar Universe . . . . 7000 



ANCIENT ASTRONOMY 9000 



CHRONOLOGY . . 9200 



SPECTROSCOPY 



Dealt with as follows : — 



BKGIX AT 



Instiniinents . , . . . . 2200 



Spectroscopy of Sun and 



Eclipses . . . . . . 4500 



Spectroscopy of Mvon, Planets, 



Cornets, Zodiacal Light . . 6800 



Stellar Spectroscopy {Stars, 



Nebula', etc.) . . . . 8000 



(K 8107) . A 



