Transactions of the Geological Society Vbl5.Tl.l6. 
Primitive Crystal of the' SULPHATE of BARYTES ’ and its Modifications . 
Primitive 
Fig .0. 
Fig . 10. 
Fig .13 . 
Fig. 14. 
Fig. 17. 
MS P 
TiF — -~_ 
g 
p' 
,P J 
Fig . IO. 
Fig. 19. 
Figure eatubiting theplanes of aFthe/ModiAcalions irv com! inatiorv with those of the/ Primitive/ Gg.rtal. 
Fig. 20. 
W. Phillips delin. Engrave! by Miss lotrry . 
Published, by W. Phillips, London, 1819. 
