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A»T. VI. Astronomical Observations made at Berlin, Wor- 

 cester County, Md. (February, 1831,; u-iik some of their 

 Results. By Stephen Alexander, A. M. Tutor in the College 

 of JVew-Jersey, Corresponding Member. 



Latitude of the place of observation, 3S<= 19' N. 



Approximate longitude of do- 75^ 15' W. of Greenwich. 



As the eclipse of the 12th of February, 1831, would not be 

 annular at any place in the state of New-York, 1 left Albany 



myself at some point in the state of Maryland, as near as practi- 

 cable to the path of the centre of the moon's penumbra. 



Previous to my departure, I was kindly furnished, by his Ex- 



by my friend Prof. Joslin, of Union College, with a valuable sex- 

 tant, by Troughton, graduated upon platinum, and measuring tens 

 of seconds. To the politeness of xMr. Edmund Blunt, of New- 

 York city, I am also indebted for the loan of an excellent pocket 

 chronometer, by Barraud. I procured likewise for the occasion, 

 an achromatic telescope, which was mounted on a brass stand, and 

 magnified about eighty times in diameter. To this list of in- 

 Availing myself of what information I could previously procure, 

 and that which I obtained in the course of my journey, I finally 

 selected for the place of observation the village of Berlin, in 

 Worcester county. With considerable difficulty I succeeded in 

 reaching that place on the evening of the 11th February. 



Although the weather on the morning of the 12th, presented an 

 appearance which seemed to indicate that the day would prove 

 cloudy, yet this soon changed ; and during the entire continuance 

 of the eclipse, we were favored with a cloudless sky. 



The times at which the principal phenomena took place, as in- 

 dicated by the chronometer, were as follows— that instrument 

 having been, originally, set to Greenwich time : 



Beginning at . . . 4h.48m. 13Js. 

 Formation of the ring, 6 22 Z^ 

 Rupture of do. 6 24 21^ 



Bad ...... 7 53 30 



