oe 
On Eozoin Canadense. 359 
and also in a massive serpentine from Burgess, resembling this, 
o6n was still g 
that these silicates penetrated, enclosed, and preserved the cal- 
i ar 
t 
crystallization of the pyroxene has given rise to considerable 
cleavage-planes, and has thus obliterated the organic structure 
rom masses which, judging from portions visible here and there, 
appear to have been at one time penetrated by the calcareous 
plates of Eozodn. Small irregular veins of crystalline calcite, 
and of serpentine, are found to traverse such pyroxene masses 
in the Eozoén-limestone of Grenville.” : 
Veins of fibrous serpentine (chrysotile) in like manner inter- 
Sect the serpentine of this Tegion, and are sometimes found cut- 
ti ozoon. Itis stated in a note to this 
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