NOME VIII. VOLCANIC GLUTENITE. 513 



sent it to M. Buffon : it may be seen in one of 

 the galleries of the Museum of Natural History 

 at Paris. 



cc 2. The grinders and the thigh-bones of an 

 elephant, were discovered in the midst of tufo, 

 in a vineyard not far from the Porta del Popolo 

 at Rome. Count Morozo sent the description 

 of it to M. de Lacepede, who inserted it in, the 

 Journal de Physique, vol. 54, page 444. 



" 3. In digging some years since, in a tufo of 

 Mont Cpuerou, in the department of Ardeche, 

 near the commune of Arbres, to find a spring, 

 M. Lavalette found a tusk of a young elephant, 

 half petrified, but perfectly characterised. On 

 this subject I published an account in the An- 

 nals de Museum, see vol. ii. p. 23, where the 

 tusk is represented. 



" 4. Different kinds of shells are found, as Shells, 

 well univalve as bivalve, in sometufos; and these 

 shells are scarcely altered. 



" The valley of Ronca, so well described by 

 Fortis, and which he justly calls volcanico-ma- 

 rine, in the territory of Verona, contains many 

 shells in the tufo. 



" Dr. Thompson an English naturalist, resid- 

 ing at Naples, possesses in his rich collection 

 some fine samples of tufos, which are found scat- 

 tered in different places of Vesuvius. Some con- 



VOL. II. 2 L 



