51 



Hudson Observatory, by Elias Loomis, Professor of Mathe- 

 matics and Natural Philosophy in Western Reserve College," 

 reported in favour of its publication in the Transactions; which 

 was ordered accordingly. 



The paper of Professor Loomis contains the Astronomical Obser- 

 vations made at the Hudson Observatory in 1840, and part of 1839, 

 being a sequel to those published in Vol. VII. Part I. Art. IV. of the 

 Transactions. 



1st. The latitude of the observatory is determined to be 41° 14' 

 40", — being the mean from 9 lower culminations of Polaris, in 1840, 

 giving 41° 14' 42". 3, and 6 upper culminations in 1839, giving 41° 

 14' 38". 1. Its longitude is stated to be 5h 25m 45s West. 



2d. The series of moon culminations, ending last year with No. 50, 

 is now extended to No. 125; and the method is pointed out, by which 

 observations of the moon's limb, which have been made on a side 

 wire, are reduced to the middle wire of the instrument. 



3d. Seven occultations of fixed stars by the moon, are given. 



4th. Observations are presented of the 2d Comet of 1840, disco- 

 vered by Galle, January 25, at Berlin. The proximate elements of 

 this Comet by Encke, were received by Professor Loomis, from Mr. 

 S. C. Walker, on the 14th of March; and the Professor having 

 prepared an ephemeris, found the Comet on the next clear evening, 

 the 18th, and made satisfactory observations of its place in the 

 heavens. 



These observations, corrected for parallax and refraction, are 

 stated as follows : 



1840. 



Berlin Mean Time. 



Comet's ., 



\. R. 



Comet's Dec. 





h 



m 



s 



k 



m 



s 







March 18 



14 



18 



12.34 



29 



40 



43.8 



o 







14 



28 



54 89 









+ 22 



49 51.8 



19 



14 



8 



4.04 



30 



7 



45.1 









14 



9 



27.52 









+ 22 



17 5.9 



21 



14 



32 



5.63 



31 



1 



2.5 









14 







23 72 









+ 21 



14 49.0 



25 



14 



12 



52.44 



32 



40 



7.8 









14 



34 



24.72 









+ 19 



15 35.1 



April 1 



14 



22 



41.82 









+ 36 



7 29.7 



2 



14 



23 



15.53 



35 



39 



25.0 









13 



57 



59.69 









+ "15 



42 2.0 



These, with 34 observations by Rumker, at Hamburg, 26 by 

 Argelander, at Bonn, and 12 by Encke, at Berlin, received through 



