i 165 ] 



52. Argilla. Clays, Boles, Maries. 

 21 fpecies. 



1 . Apy ra; Porcellain Clay. 



2. Leucargilla \ l^obacca- 



pipe Clay. 



3. YoxztW2S\2i\ China Toy- 



cellain Earth, 



6. Lemnia ; Lemnian 



Earth, 



7. Fullonica;, Stone Mar- 



row ^FulhrsE^nh, 



a. Simple. 



8. Tripoli tan a ; Tripoli^ 

 or Rotten Scone. 



9. Communis Brick 

 Clay, 



10. Figulina ; Potters 

 Clay. 



13. Bolus ; Boles of diffe- 

 rent colours. 



h. Mixed. 



15. Tumefcens ; Fer- 

 menting Clay, 

 17. Marga Marie, 



18. Umbra'; Umhre, 



19. Nilotica; Marie of 



the Nile, 



53. Calx. Chalks. 9 fpecies. 

 a. Soluble in acids. 



1. Creta ; Chalk, 



2. Marmorea \ Mineral 



Agaric, 



3. Conchacea ; Shell 

 Chalk,, or mmlder- 

 ed Shells, 



b. Not foluble in acids, 



5. Paluftris ; 'True Mi- 1 6, Gur; Gypfeous Gw\ 

 neral Agaric. \ or Lac Luna, 



M 3 c, Granu- 



