152 



Scieniific Intelligence. 



[Feb. 



7. Boscovick and Maire, while employed in laying down a 

 map of the states of the church, determined the position of the 

 following places : 



Ancona ,, 43° 



Cervia 44 



Comacchio 44 



Fano 43 



Fermo 43 



Loreto , 43 



Pesaro 43 



Ravenna 44 



Rimini 44 



Ripa transone 43 



Sinigaglia 43 



XII. hie of Elba. 



It has been commonly beheved that the Isle of Elba, in con- 

 sequence of the inexhaustible mines of iron in which it abounds, 

 especially Mount Calamita, which is supposed to be a solid 

 mass of loadstone, has a sensible effect upon the needle. Hence 

 it has been thought that vessels in the neighbourhood of this 

 island could no longer depend upon the declination of their 

 needles, being the same as at a distance. This was tried by 

 Mr. Charles Rumker in 1818, but at the distance of two, three, 

 or four nautical miles from the island he did not find that the 

 needle in his vessel was in the least affected by the action of the 

 island. The variation of the compass was 18° 18' 40" W.— 

 (Ibid.) 



XIII. Population of the Calton iuNov. 1819. 



Tlie Calton is a suburb of Glasgow inhabited chiefly by jour- 

 neymen manufacturers. It has been lately erected into a burgh 

 of barony, and in consequence, the following enumeratiou of the 



