3 Pp. 185 et seq. 
370 J. W. Dawson on fossils from the Laurentian of Canada, 
siliceous bodies mentioned in a former r as occurring in t 
Loganite filling the chambers of machen: of Hozoon from Bur- 
gess, 2 
IIL. Specimens from Madoc—I have already referred to frag: 
ments of Kozoon occurring in the limestone at Madoc, one of 
which, found several years ago, I did not then venture to describe 
thin wall having a e 
— granular or porous structure and excavalt’ 
into rounded recesses in the manner of Eozoon. It lies obliquely 
i . 
. 
ovember, 1866. : : : 
* Proceedings of Royal Academy of Munich, 1866; Q. J. G. g., vol. xxii, Pt» 
