Dawson and Carpenter on Eozoon Canadense. 247 
Feet. 
two or three feet. Gold occurs in it at the village of Madoc, associated 
with argentiferous tetrahedrite and in irreg veins with bitter-spar, 
quartz, and er. 
_ 6. Gray siliceous or fine-grained mica-slates, with an interstratified mass of 
about sixty feet of yellowish-white dolomite 
ish and grayish micaceous slate, interstratified with layers of gneiss, 
___ and occasionally holding crystals of magnetite 500 
 & Gneissoid micaceous quartzites, banded gray and white, witha few 
‘a instratified beds of siliceous limestone 
with occasional layers of diorite, and layers of arusty-weathering gneiss 1,000 
___ This division in Tudor is traversed by numerous N.W. and S.E. veins, 
t holding galena in a gangue of calcite and barite. The EKozoon from Tudor, 
u us di- 
. 4 Pat Was he Ape 
vision, which appears to form the summit of the Hastings series. 
Total thickness.... 2 1 leUR 
I, SPECIMEN OF EOZOON FROM TUDOR, ONTARIO. 
inapplicable 
: stone, holding d te grains an 
temaining in the matrix is scarcely two lines, at least in the 
8 exposed. The septa, or plates of the fossil, are in the 
ate’of white carbonate of lime, which shows their form an 
i 
ing nearly at right angles to the septa, a 
