Natural History. 213 



servations were in that part, however, confined to latitudes, while 

 the lunar distances observed by him in Egypt have, after a lapse of 

 fifty years, been calculated by Burg, and received by the learned 

 with the praise which they deserve. Beauchamp made two scientific 

 journeys to the East, but was much better provided for making 

 observations on the second, than on the first. The published obser- 

 vations of this rather capricious traveller did not answer to the high 

 expectations that had been formed. The numerous errors, espe- 

 cially in writing-, have baffled the exertions of some of the ablest 

 and most indefatigable calculators ; and the suspicion that some of 

 his observations have been subsequently corrected by himself, as 

 well as the circumstance that his observations at Casvin of a lunar 

 eclipse did not give the position of the Caspian Sea, near which 

 that place is situated, have lowered the estimation of Beauchamp's 

 labours. Professor Oltmanns obtained a manuscript of some of 

 Beauchamp's observations which was supposed to be lost, entitled 

 ' Relation Historique et Geographique d'un Voyage de Constan- 

 tinople par mer, Tan V de la Republique. Par le Chevalier Beau- 

 champ. 38 pp. fol.' In this he was likewise much disappointed, as, 

 of many observations, results only were given; while in others it 

 appeared that Beauchamp always neglected the aberration and nu- 

 tation. Notwithstanding this, Professor Oltmanns has thought it 

 worth while to recalculate the observations by the latest tables, and 

 he has thus determined the following geographical positions : 

 Trapezunt. Lat. (mean of two observations) 41 2' 18". 



Long, (by chronometers, lunar distances and eclipses 

 of Jupiter's satellites, all agreeing tolerably well), 

 mean 37 11' 18" E. of Paris. 

 Sinope. Lat. (mean of seven observations of the sun and stars) 



42 1' 42". 

 Long, (mean of chronometers and eclipses of Jupiter's 



satellites) 32 45' 33'' E. of Paris. 

 Gydron. Lat. (one star observed) 41 54' 6", 

 Long. 3 37' E. of Constantinople. 

 Jeniki. Lat. by three observations of the sun, mean 41 59' 49''. 



Long, by chronometers, 31 16' 15". 

 Amasra. Lat. (according to Beauchamp's own calculation), 



41 46' 8". 

 Long. 29 50' 30". 

 Neracle du Pont or Eregri. Lat. by four stars, mean 41 17' 6". 



Long, by two eclipses of Jupiter's sa- 

 tellites, mean 29 9' 56" E. of Paris. 



Bagdad. Here Beauchamp had an observatory on his first expedi- 

 tion : lat. then found, 33 19' 50*. 



Long, by eclipses of Jupiter's satellites, a solar eclipse, 

 and an occultation of J upiter by the moon, all nearly 

 agreeing, mean, 42 2' 5"E. of Paris. 



