150 M. Godon’s mineralogical observations. 
line. quartz, carbonated lime and iron, (brown ‘spar), rarely of com- 
pact epidote. Epidotic amphiboloid, felsparoid, argilloid, and amig- 
deloid form subordinate masses to it, or rather are interposed in the 
great masses of this rock. It is found contiguous to amygdaloid 
[Brighton]; the joining line being interrupted with large lumps of 
quartz, accompanied by chlorite talc, pyritous copper, and olygist 
iron. 
36. How much attention soever I have paid to the examination of 
this rock zn situ, I have never observed in it any distinct stratification. 
It commonly unites with the rocks previously described, and with 
amygdaloid, often by an insensible transition. I possess specimens, 
which, on pieces of four inches square each, present its different pas- 
Cee to felsparoid, ees Pa ae and poe petrosilex, 
argilloid, Soe 
On account of the donk of giving to this rock a: aname, taken from 
its nature, I have been induced to adopt the name of wacke used by 
- the German mineralogists, who have observed this rock better than 
others. It corresponds to the brecia saxosa of Crousted, and tothe __ 
rock of Vallorsine (pudding of Vallorsine) of Saussure. When 
unaltered, it is susceptible of an high polish, 
37. An examination of the nature of this rock, together with its 
geognostic situation, concur in inducing us to consider it as belong- 
ing to primordial soil. In fact, the freshness of the substances, 
which form the elements of its kernels, when the internal part of it is 
opened, and their rapid decomposition, when in contact with air and 
water, prevent the supposition, that it has been formed by a union of 
the fragments of primordial rocks, rounded by friction, transported 
and deposited by waters, and joined or soldered together by a second- 
ary operation ; a supposition, which has been adopted to explain the 
origin of the pudding stone and sand stone, which belong to seconda- 
