24^ TRAVELS THROUGH 



Behind S. Quirico, the hills which arc next to 

 the place confift of a fine light yellow, fome- 

 what argillaceous lime ; then came marl hills, con- 

 tinuing to Siena. I pafled feveral arms of the 

 Or da and Qmlrone. 



The foil, from Aquapendente to Siena, is, upon 

 this account, generally confiding of marl-hills5 

 under which there is certainly volcanic tufo next 

 to Radicofani. The marl has been warned toge- 

 ther, either by the above-mentioned rivers or by 

 the fea, which appears by the frequent foffil fea- 

 Jhells near S. Quirico ; and, is the more probable, 

 as towards the fea the country is ftill moory and 

 jnarfhy, being, for that reafon, called maremma. 

 The villages from S. Quirico, and even the houfes 

 jn Siena, are built of brick. The ftreets have no 

 other pavings ; marks of the want of quarries, and 

 of an abundance of clay and marl. Near the 



of natural bignefs. He is next to publifh an account of the 

 works which are manufactured here. 



The warm baths at Vlgnone are about two Italian miles 

 diliant from S. S>uirico. They are likewife impregnated 

 with hepar fulphuris, depofe a calcareous tufo (which fer- 

 jnenting but a little with acids is rather more felenitic), and 

 Spring in .ail probability from Montagna di S. Fiore. They 

 are defcribed in Olfer<vazioni intorao.all* acque del bagno di 

 atia. dal^D. Teofila Grifoni, Siena, 1705, 8vo. A 

 warm bath is faid to be near S. Quirico, 



foria 



