International Catalogue of Scientific Literature. 



(E.) ASTR0X031Y. 



PRIMARY DIVISIONS. 



BEG IX AT 



BIBLIOGRAPHY HISTORY. GENERAL ., 0000 



SPHERICAL (GEOMETRICAL) ASTRONOMY .. 0100 

 THEORETICAL ASTRONOMY AND CELESTUL 



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 (GeodesT/, etc.) .. 5000 



Planets, Cornets. . . . 5500 



Stellar Universe . . . , 7000 



ANCIENT ASTRONOMY 9000 



CHRONOLOGY 9200 



SPECTROSCOPY 



Dealt Avitli as follows : — 



BEGIN* AT 



Inslrianenfs ., .. .^ 2200 



Spectroscopi/ of Sun and 



Eclipses . . . , . . 4500 



Spectroscopy of Moon, Planets, 



Comet?, Zodiacal Light . . 6800 



Stellar Specti-oscopy (^Stars, 



Nebula, etc.) . . . . 8000 



(E-'JU52) B 



