1820.] Scientific LdeUigence. 149 



VI. Declination (if the Needle at Lyons. 



1751, in November 15° 45' W 



1752 16 00 



1755, in December 16 30 



1757, in December 17 15 



1760 18 .30 



1761 18 45 



Thus the increase amounts to 9' or 10' in the year. — (Ibid. p. 223.) 



VII. Position of Lucca. 



Father Inghirami, during a residence at Lucca in 1818, had 

 an opportunity of making a set of observations to determine the 

 latitude and longitude of this celebrated city. The following are 

 the results : 



Latitude . , 43° 50' 49-5" 



Longitude 28 10 25-9 E. of Ferro. 



In 1809, Baron von Zach determined the difterence between 

 the longitudes of Pisa and Lucca by means of a chronometer. 

 The result gave him for the longitude of Lucca, 



28° 10' 25-8" 



a result which almost coincides with the observations of Inghi- 

 rami. 



The latitude of Lucca, determined by Baron von Zach's. 

 observations, is, 



43° 50' 50-54". 



Numbers which likewise correspond well with the determina- 

 tion of Inghirami. — (Ibid. p. 227.) 



VIII. Position of Montpellier. 



The latitude of Montpellier was ascertained in 1811, by Baron 

 von Zach, and found to be 



43° 36' 15-71" 



The longitude is 6' 10" in time E. from Paris.— (Ibid. p. 247.) 



IX. Determination of some Places on the Coast of Sicily. 

 By Mr. Charles Rumker. 



