tl8 



SCIENTIFIC NEWS. 



The first of these is by Dr. Olbers, the other two frorri 

 the observatory of Gottingen. 



Dr. Gauss has determined its elements in the following 

 manner. 



Elements of 



Vesta. 



Mathematical 

 part of Hrm- 

 fcoldt & B>»n- 

 fclahd's travels. 



Statistical ac- 

 count of 

 Mex.co. 



Epoch of the mean longitude at Bremen, March 29, 1807i 

 at 1 2 o'clock, mean time. ........ 193* 8' 4-6"* 



Longitude of its perihelion ........ 249 7 41 



aphelion 69 57 52 



ascending node on 



the ecliptic '••••• 103 8 36 



Inclination of its orbit 7 5 49'5 f 



Diurnal tropical motion* • • • 16 18*9i 



Logarithm of the mean distance •••• 0-3728428 



Eccentricity 0*097505 



Greatest distance from the sun 25*625 



Least • 21-514 



Period of its revolution 1321 days, 12 hour?. 



The fourth part of von Humboldt and Bonpland's Tra- 

 vels will contain in two 4to. vols, the astronomical observa- 

 tions, trigonometrical operations, and barometrical mea- 

 sures. Mr. von H. has thought it would be most satisfactory 

 to give the whole of the original observations themselves, 

 that it may be seen what degree of confidence the result? 

 deduced from them deserve. The calculations have been 

 made by Mr. Jabbo Oltmanns from the best tables. 'The 

 magnetical observations, with an examination of them and 

 of those of Cook, Vancouver, and other able astronomers^ 

 by Biot, will occupy the 2d. vol. As such a number of 

 figures must be a long while printing, the latitudes and 

 longitudes of various places, deduced from astronomical ob- 

 servations, have been published in a separate tract in Latin. 



In the third part of their travels, consisting of a statisti- 

 cal Essay on the Kingdom of New Spain, they estimate the 

 present population of Mexico at more than six millions, 



*[n the Magazin Encvclopedique it is 192° 9' 54", 

 t Ibid. 7° 8' LA'. 



They 



