248 TRAVELS THROUGH 



vazionifopra il Sale delta Creta, &c. del Sr. D. G. 

 Baldafiari. Siena, 1750. 8vo. 



The following articles feemed to me the mod 

 remarkable in the Academical-cabinet. 



1. Coals, either bituminous wood or true coals, 

 and argillaceous flate, impregnated with petroleum, 

 lie in flats or beds under the clay and marl-hills in 

 feveral parts of Tofcana. 



2. A jaw, with the teeth of an unknown ani- 

 mal, found in a marl-hill in Tofcana, and defcri- 

 bed by Mr. Baldafiari in the Academical Tranf- 

 a&ions agrees with an American jaw defcribed 

 by Mr. Guettard in his Memoirs. 



3. A blunted limeftone, worm-eaten by pho- 

 lades, found in a marl-hill in the Sanefe. 



4. Yellow fand-ftone, with a petrified fea-ftar or 

 afteria ; from a hill near Giufuri, a mile diilant 

 from Siena. 



5. Black quartz- cry ftallizations -, either pitch- 

 black throughout, or only tinged in the furface ; 

 having eight triangular faces, or rather the form 

 and bignefs of rough diamonds 5 from monte Pul- 

 ciano. 



6. Native yellow fulphur in cubic cryftalliza- 

 tions, inclofed with pyramidical calcareous fpar in 

 grey limeftone ; from S. Agatha di monte Feltro in 

 Ducato d' Urbino, in Romagna. This native ful- 

 phur refembles a yellow knotty blende ; but yields 



a yellow 



