JV. W. Portion of Lake Huron. 271 



eated rent. The interior consists of calc spar. At the right 

 end there is a smooth cylinder one inch in diameter and 

 two 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 orthoceratites.* They 

 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 1S20 by a 

 surveying party. 



All these remains are calcareous. 



The fossilized remains of the Manitouline range must be 

 the subject of a separate paper, as together with those of St. 

 Joseph, and the necessary drawings, they occupy fifty-five 

 pages. They are composed of quartz, frequently so fine as 

 to approach to the form of calcedony. 



Numbers 6 and 7 are varieties of organic remains abun- 

 dant in the quartzose limestone of Collier's Harbour : in which 

 they are wholly or partially imbedded. They are composed 

 of quartz with a small proportion of hme. Their colour is 

 brown of different shades. The external surface is more or 

 less situated longitudinally. The interior is filled whh a 

 granular, sandstone-like substance, or presents radii issu- 

 ing from the centre, or irregular cavities lined with quartz 

 and botryoidal calcedony. They are more or less flatten- 

 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. Fragments only have been found. I have seen 

 fifty. The longest is twenty-seven inches, which tapers 

 gradually to one extremity, a circumstance not observed iu 

 any other case. Two fragments of similar form have been. 

 met with lying parallel and contiguous. In another exam- 

 ple one is partially imbedded in the other without mutual 

 derangement. These substances greatly resemble vertebrae, 

 of what animals I know not. They belong to members of 



* Judging from the drawing, these remains appear to us similar to somt 

 found south of Lake Ontario, and which Mr. Brongniart thinks are or - 

 thoceratites.—Vid. p. 222 of this VoL—\Edilor.] 



