INDEX. 371 



*4- 



t "m&. * white * in ditto '4 1 - 

 and Lava, 143. 189. 

 e. 2~e!kiv, in Vefuvian Lava, 145. 156. 

 /.' Blueijb, in Vefuvian Lava, 14$. 

 . Violet Ametlyftine coloured, in black Lava, from 

 Oftia, 189. 



11. Hexagonal flakes and lamella, black, in Vefuvian 

 Lava, 14$. 



12. Garnet-like globular polygons, or pofyedra-, fome with 

 fifty- fix rhomboidal faces, the biggeft one inch dia- 

 meter ; white, vitreous or decaying, farinaceous, and 

 then more or lefs tranfparent ; a fpecies of garnets, 

 141, 42, 43. 



In white Quarta, 142. 



In green Sherl-fpar or Emerald matrix, 142. 



In Vefuvian black, grey, and red Lava, 137. 143. i$. 



2 S7- 



In Lava, from Tretto, C2j 53. 

 j j * 



In pumice-ftones, tufo, and afties, 129, 130. 149 



162. 181. 

 InPiperino, 181. 

 In oriental Bafaltes, 23033. 

 13; Spar ; fpaffyfherl, green; matrix of Emerald, 142, 



Contains red Garnets, 7. 329. 



trl-Vitrijications, or pebbles, deftitute of any regular form, 

 extreamly hard; fpecies of precious ftones, 56.' 

 150 $2. 



' *. Green, in black Lava, from monte Carajo, Kke 

 Cryfolite, 15. 

 like Emerald, 150. 156. 

 In Euganean Lava, 27. 

 In Vefuvian black Lava, io and 156. 

 In black J^ard Lava, near monte Fiafcone, 237. 



B b 2 I- T<1 



