194 MATLOCK INCRUSTATION. 



of leaves, moss, baskets, nests containing- eggs, and even 

 old wigs and hair-brooms have been readily obtained. 

 In Derbyshire there are springs of this kind, one of 

 which is near the western bank of the Derwent, at 

 Matlock. 



Matlock Incrustation. 



Italy and many other countries have such springs 

 also. At the baths of San Filippo, in Tuscany, the 

 stream is directed against moulds of medallions and 

 other bas-reliefs, and very beautiful casts are thus 

 obtained. 



Another of these springs exists in Persia ; it issues 

 from the earth in bubbles, and falls into a basin of 

 about fifteen feet in diameter. On flowing over the 



