92 TRAVELS TH R O UGH 



26. Pietra bigia. See macigno. 



27. forte ; an argillaceous lime or mar- 



ble-ftone, found in the garden at Boboli, near S. 

 Francefco di Paola, alia Campora, near Florence^ 



f and at S. Margarita a Montici^ ferving for the 

 pavings of the ftreets at Florence ; blue or yellow- 

 coloured ; and therefore diftinguifhed too by the 

 names of pietra bigia and turchina. The fmaller 

 clay beds in the quarries of Pietra forte are called 

 bar dell oni. 



28. Pietra morta\ the uppermoft, loofe, and 

 fractured bed of fand-ftone or macigno, unfit for 

 ufe ; to be diftinguifhed from Sajjb morto or flate, 

 which goes under that name becaufe it very often 

 is hid and as it were buried by fuperincumbent 

 limeftone. 



29. Pietra nefritica. See nefritica. 

 go. ferena. See macigno. 



3 r . talcbina ; every fort of micaceous 



ftone. 



32. Piftare', pound and pulverize. 



33. Piombo q/ia argent o qua e la fp^rfo a'majfe, a 

 grappi* a grappetti ofia rognonl ; lead or filver ore 

 fprinkled in nodules or grapes into the veins. If 

 it be fprinkled in fmaller flakes, they call it a 

 fpruzzi; and if thefe be ftraying and appearing 



but now and then, they call them picciole fein- 

 title di Piombo, &c. 



34. Pozzo; 



