BY J. J. DE FERRER. 



Si", 



Comparison of the observations with the results of the theory 

 calculated by the above elements. 



The longitudes and latitudes observed and calculated in th( 

 following table, are freed from nutation and aberration. 



The two last columns shew the difference between the longi- 

 tude and latitude, observed and calculated. 



The observed 

 Latitude. 



18 46 32 : 

 37 41 36 

 51 13 17 

 51 55 00 

 53 54 33 

 59 17 42 



59 42 49 



60 06 25 



61 56 37 



62 51 30 



Calculated 

 Longitude. 



220 21 37 

 234 36 19 



251 41 36 



252 58 12 

 257 02 25 

 272 55 03 

 274 38 50 

 276 28 39 

 287 55 14 

 299 56 44 



Calculated 

 Latitude. 



18 46 30 N 

 37 42 15 

 51 12 55 

 51 54 21 

 53 55 01 

 59 T8 36 



59 42 58 



60 06 46 



61 56 51 



62 51 22 



Diff. 



long. 



+47 



+ 2 

 — 49 



+17 



+ 13 

 —27 

 —18 

 — 33 

 —26 



Difi. 

 lat. 



+05 

 —39 

 +22 

 +3'. 

 —28 

 —48 

 —09 

 —21 

 —14 

 +0S 



Continuation of Astronomical Observations, made, at the plantation 

 of Don Joseph de Cotilla. 



Determination of Latitude. 



1807, Novr. 13 By 8 series of Q's double altitudes, observed near the meridian, with a 



17 



21 



Novr. 17 

 20 



circle of reflection. 



ditto Q's diameter, 



ditto ditto. 



By 4 series of double altitudes of 



the pole-star. . . . 



By 2 series of Fomalhat. 



22' 

 22 

 22 



55' 14V N. 

 55 15| 

 55 09i 

 mean. 



22° 55' 13",5 N. 



22 

 22 



20 

 17 



■ mean. 22 55 18, 5 



Mean Latitude . . 22 55 16 



By astronomical observations, I have determined the bearing 

 of the highest hill of Camoa, N. 13° 34' 10" W. 



The hill of Camoa, from the city of Havanna, according to 

 the survey which was made by the order of Government, was 

 determined —29:250. Varas of Castilla =13,11 geographical 

 miles, bearing S. 45° E. 



Latitude of Havanna, according to a great number of observations 

 made with the same circular reflector. ..... 



Hill of Camoa S. 45 E. 13',11 miles, difference of latitude 



Latitude of the hill of Camoa. ..... 



By direct observations on the hill, with the circular. 



Mean latitude of the hill. ...... 



