Terre d'Eboulement. 



tiigh, and confift either of earth, or of 

 rock-ftone. 



ONE of thefe brooks, which flows over 

 a hill of lime-ftone, contains a mineral wa- 

 ter. It has a ftrong fmell of fulphur, is 

 very clear, and does not change its colour, 

 when mixed with gall-apples. If it is 

 poured into a filver cup, it looks as if the 

 cup was gilt ; and the water leaves a fedi- 

 ment of a crimfon colour at the bottom. 

 The ftones and pieces of wood, which ly 

 in the water, are covered with a flime, 

 which is pale grey at the top. and black at 

 the bottom of the ftone. This flime has 

 not much pungency, but taftes like oil of 

 tobacco. My hands had a fulphureous 

 fmell all day, becaufe I had handled fom 

 of the flimy ftones. 



THE black lime-flate now abounds again, 

 near the level of the water. It lies in 

 ftrata, which are placed almoft perpendi- 

 cularly near each other, inclining a little 

 towards W. S. W. Each ftratum is be- 

 tween ten and fifteen inches thick. Mod 

 of them are ftiivered into thin leaves at the 

 top, towards the day ; but in the infide, 

 Whither neither fun,, nor air and water can 

 penetrate, they are clofe and compact. 

 Some of thefe ftones are not quite black, 

 but have a greyifti caft. 



VOL. IIL O ABOUT 



