86 | A List of Minerals and Organic Remains: 
the bicarinata of Leseur, and the subrotunda. Those of 
Lake Simcoe are almost spherical. very small, and always 
invested with nacre. The bicarinate of Lake Erie are 
remarkable for their great size. 
Producte.—No locality of any extent is without produc- 
te of various forms. In the Lake of the Woods, I have 
found them in deep straw yellow limestone, nearly two 
and an half inches long, with a remarkably broad base. In 
the samé lake, they are also ovate ; and in Lake Huron, and 
in the district of Gaspé. They are often of chertz. 
Tam not aware that the spirifer has yet been discovered 
in America. 
Encrinis—The encrinis, prominens, verrucosa, and 
levis, under different modifications, together with penta- 
crinital columns, are plentiful every where, but rarely with 
ramifications or stomach. The former has been found in 
the isles fronting Thunder Bay, on the south of Lake Hu- 
ron by Lieutenant Bayfield, R. N. ‘Phey abound at Mon- 
treal, as well as the stomachs or cups of the stag’s horn 
encrinite, imbedded in shaly black limestone. I found 
there a beautiful and large example of the column and 
stomach of the encrinis moniliformis of Miller, in May, 
1823. My friend Mr. Lee, late of the thirty-seventh reg- 
iment of British Infantry. met with, in the same place, what 
appears to M. Leseur and myself to be the lower part and 
base of the stomach of an encrinite, resembiing the pear 
encrinite. I discovered another at Notawasaga, in Lake 
Simcoe. 
Caryophyllia have been found in great numbers in the 
south of Lake Erie, by M. Leseur. I have seen them 
only in limestone very similar to that of Lake Erie, at the 
Little Detroit of ua Cloche, at the east end of the great 
traverse of Forét des Bois; where they are grouped with 
producte, encrinites, orthoceratites, Nc. and attached by a 
pedicle. 
Turbinolia.—This species of madrepore, abounds in the 
Lake of the Woods, Rainy River and the great lakes, but is 
more rare at Montreal and about Quebec. It is of various 
sizes and shapes, common in the United States. In Lake 
Huron it often has extremely thick transverse ruge, perhaps 
indicative of age. An individual from that lake is figured 
in the Geol. Transactions with tubular arms in the upper 
