Astronomy in Gertnani/,for 1818. 8.9 



discussion of the popular notions of the influence of the moon on 

 the weather, and on diseases ; and though his abundant candour 

 leads him to admit the possibility of some such opinions having 

 been founded on fact in warmer climates, he decidedly denies 

 that any connexion between the changes of the moon and of the 

 weather is ever observable in the north of Germany ; and he 

 asserts that, in the course of an extensive medical practice con- 

 tinued for a number of years, with his attention constantly di- 

 rected to the lunar periods, he has never been able to discover 

 the slightest connexion between those periods and the increase or 

 decrease of diseases, or their symptoms. 



XXVII. Occultatmis of Stars for 1819. 



The particulars of each are calculated for Florence: they ex- 

 tend to stars of the 7th and 8th magnitudes. 



XXVIII. Encke on the Comet o/ 1818. 



The parabolic elements here exhibited represent all the obser- 

 vations within about 4' at the utmost. 



XXIX. Nicolais new Elements of Juno. 



Mean longitude 1819, Manheim . . 117° . 45' . 2 ",84 



Daily tropical motion 8 1 3 ",8698 1 



Longitude of the Perihelium 53° . 32' . 56'",09 



Angle of eccentricity 14° . 53' . 17"",44 



Ascending node 171°. 6' . 50",23 



Inclination of the orbit 13°. 3' . 37 ",29 



Logarithm of the greater semiaxis 0.4263500 



A table of the places of the planet, up to May 1819, is sub- 

 joined : they differ a degree or two from Posselt's. 



XXX. Littrow's Observations of the Obliquity of the Ecliptic. 



From 15 observations at Ofen, in 1818, the mean obliquity 

 for the 21st June, appears to be 23° . 27' . 49 ",28 ; the errors 

 of the separate observations amounting to a second or two. 



