DOMAIN XI. DECOMPOSED. 



" 1667. Perfectly decayed basalt, which in 

 some places contains a large quantity of earth re- 

 sembling bole, with interposed basalt consisting of 

 lamellar distinct concretions. 



" 1671. A pentahedral columnar tolerably large 

 piece, which consists entirely of this earth, so that 

 evidently the basalt must have been decomposed 

 into it. 



" Rem. It deserves to be noticed as a singular 

 phenomenon, that a perfect hexahedral prism of 

 chrysolite occurs in it. 



" 1819. A very decayed porous basalt frag- 

 ment, which lay between the solid layers, and is 

 called lava flag. 



" 1673. Very decayed porous basalt, which 

 had better be called a basaltic amygdaloid, where- 

 in are still contained abundant vestiges of the 

 earth, with which these pores were formerly tilled. 



" 1674. The same fossil, but the pores, not so 

 uniform, are smaller and larger promiscuously. 



" 1675. The same fossil, penetrated more uni- 

 formly with the sulphur-yellow argillaceous mass, 

 which gives to the whole, in the opinion of many 

 geologists, a volcanic appearance." 



HYPONOME II. 



Amygdalite. 



