1891. | NEW YORK ACADEMY OF SCIENCES. 93 
PART II. 
List of general subjects, under which are arranged the titles of the 
several papers, etc.: 
1, Astronomy, Cometary. THE SOLAR SYSTEM, 
2. : History of, 
3. % Meteoric. 10. The Sun. 
4, be Practical. 11. The Moon. 
5. a Sidereal. 12, Venus. 
6. ie Spherical. 13. Mars. 
Te os Theoretical. 14, Jupiter. 
8. Astronomical Bibliography, 15. Neptune. 
9. i Biography. 16. The Minor Planets. 
THE SIDEREAL SYSTEM. 
17. The Nebule. 21. Stellar Parallax. 
18. Stars, Double. oo) ‘¢ Spectroscopy. 
19s es “Red: 23. Miscellaneous Subjects. 
20. ‘¢ ~~ Variable. 
I. COMETARY ASTRONOMY. 
Sur les Queues des Cométes. Par Th, Bredichin. I., 99. 
Sur les Configurations des Cométes, par Théodore Schwedoff. III., 113. 
Quelques Mots sur les Cométes : Réponse A M. Schwedoff. Par Th. Bredi- 
chin. III., 121. 
Comet of 1733. I., 164. (Remarks on the probable identity of this 
comet with the comet of 1807 and comet b 1881, the conclusion being 
that they are not identical.—R. C.) 
—Reply to the Remarks of Dr. Copeland on my Calculation of the 
Place of the. By J. A. C. Oudemans. I., 207. 
vigencc ate nee On the Multiple Tail of the Great. By J. L. E. Dreyer. 
II., 104. 
—Sur la Queue Multiple dela, Par Théodore Schwedoff. III., 182.. 
——Further Note onthe. J. L. E. D. III., 184. 
Comet of 1812 (Brooks’, 1883), Observations of. III., 131. 
Comet 1880 d (Hartwig), Observations of the Spectrum of. I., 1. 
——Observations of. L., 4. 
Comet Faye (1880), Observations of. L., 4. 
Comet Schaeberle (1880), Observations of, I., 4. 
Comet 1880 f (Pechiile), Observation of the Spectrum of. I., 40. 
Comet Encke, Observations of (in 1881). I., 182 and 186. 
Comet a 1881 (Swift), Elements and Ephemeris of, I., 120, 121. 
— Observations of. I., 122. 
Comet 6 1881, Elements, Ephemeris, and Observations of. I., 141, 161,. 
163, 177, 211; IT., 42, 60. 
—tThe Polarization of Light from. By Arthur W. Wright. I., 157. 
— Observations of the Spectrum of. I., 162. 
Cométes b et c 1881, Recherches sur les. Par Th. Bredichin. II., 1. 
——Note supplémentaire sur les. Par Th. Bredichin. I1., 56. 
