NV. W. Portion of Lake Huron. 271 
pone rent. The interior consists of cale spar. At the right 
d there is a smooth cylinder one inch in diameter and 
oe and a half inches long, issuing obliquely from the body 
of the Remain. I can offer no conjecture as to the nature of 
this substance, except that they are oritinderedita™ The 
have been called fossilized sturgeon, but the direction of 
the flakes in that fish, and an examination of a transverse sec- 
tion forbid the idea. They were first noticed in 1820 by a 
surveying party. 
All these remains are calcareous. 
The fossilized remains of the Manitouline ag Pes be 
the subject of a separate paper, as together w of St. 
se and was necessary orca they occu “fifty-five 
Sy are wholly or etal imbedded. They are composed 
of quartz with a small proportion of lime. Their colour is 
brown of different shades. The external surface is more or 
less situated longitudinally. The interior is filled with a 
granular, sandstone-like substance, or presents radii i issu- 
ing from the centre, or irregular cavities lined wit 
and botryoidal calcedony. They are more or less fiaiienis 
ed, but sometimes they are nearly circular. No. 6 is the 
most common form. The usual length of a joint is an 
inch. I have seen one, two inches long, and with a mode- 
rate breadth. The latter dimension has never exceeded 
two and a half inches or been less than one inch. No. 6 is 
illustrative of the ordinary expansion at the socket part of the 
joint. No.7 presents great expansion at this part with mod- 
erate size. “ragments only have been found. I have seen 
hy: ‘The longest is twenty-seven inches, which tapers 
g to one extremity, a Eecaminies not observed in 
any othe case. "Two fragments of similar form have been 
met with lying parallel and contiguous exam- 
ple one is partially imbedded in the other without mutual 
ement. ibst greatly resemble vertebra. 
rarige : 
of what animals 1 know not. They belong to members of 
* Judging from the drawing, these remains appear to | us similar to some 
found south of Lake Ontario, and which Mr. Brongniart thinks are or- 
thoceratites.—-Vid. p. 222 of this Vol —{ Editor.) 
