ASTRONOMICAL OBSERVATIONS. 161 



comparing the different observations, ascertained that his as- 

 sistant had contracted the erroneous habit of marking down 

 the transits, half a second alter they had happened, from 

 which it became necessary to subtract 0". 5 or" time, from the 

 transits of the stars. II' 1 had omitted this correction, my re- 

 sult would have been similar to that of Citizen Meehain. 



The present observation has this advantage, that the star pas- 

 sed but 2', 13" from the apparent centre of the moon, so that 

 if there had been an uncertainty of 10" in difference of lati- 

 tude, there could only be one of 3" in the difference of me- 

 ridians. 



Observations of the Eclipse of the Sun on the 2\st February 1803, 

 made in tlie City of Havanna and at Lancaster in Pennsylvania, 

 U. S. 



IN the Havanna the beginning of the eclipse coidd not be 

 observed on account of the clouds; at 4\ 18'. 3o". when the 

 solar disk became clear, the indenture (euerda) was perceptible. 

 The distance of the horns, was observed alternately, with an 

 excellent Heliometer of Dolland, by Don Antonio de Robre- 

 do, and by Don Jose Joaquin de Ferrer. 



Apparent times. Distance of the Horns. 



h i a i u 



4 24 47 15 25 



4 26 41 17 06 



4 29 12 18 59. 2 



Least distance of the Limbs. 



h i it a 



5 16 45 53. 2 



o ' // 



Latitude of the Havanna by Ferrer 23 09 07 



h i a 



Longitude W. of Greenwich by the same 5 29 16 



Beginning of the eclipse in Lamallcr, as observed by Mr. A. Ellicott. 



h i u 



Apparent time = 4 50 57 



o I It 



Latitude of Lancaster 40 02 39 7 u„ n/r, irn;™** 



Longitude W. of Greenwich • . 5>' 05 03 5 V Mr -' Jlu,cott - 



Elements calculated by the theory of Laplace, at. 9 25 mean time in Paris. 



Z 



