a2 
4. Eight trilobites, from different localities. 
(a) One from Canandaigua, on the highest ground, 
eleven feet below the surface; in lime-stone ; in fine pre- 
servation.—F’. Granger. 
(b) Trilobite of a circular figure, nearly three inches in 
diameter. Anticosti island, gulf of St. Lawrence.—F. 
Blanchet of Quebec.—Pieces of the white marble com- 
posing the rocks there, filled with encrinites, and excavated 
by pholases.—The same. 
(c) Two trilobites, from Munsey, Pennsylvania, in sin- 
gular attitudes ; especially one, that adheres to a ball of 
pyrites, about as large as a musket shot.—Dr. Reynolds. 
(2) Trilobite, rolled up; from a lime-stone cavern in 
Pike county, Pennsylvania.—King. 
(e) Anterior part of a trilobite. Jefferson county, New- 
York. 
(f) Neat little specimen. St. Louis, Missouri.—De 
Camp, 
(g) Black trilobite, with the tail doubled under. Lo- 
cality not known. 
5. ‘I'wo pencil drawings of the Kingston, otherwise call- 
ed the Bleecker trilobite ; length three inches and a quarter; 
breadth one inch and three quarters.—S. Akerly. 
6. Very peculiar crustaceous creature, in lime-stone. 
Indiana. | 
7. Three specimens of petrified wood, the mineralizer 
being carbonate of lime. 
(a) One of pine; from Chitteningo Creek, New-York. 
—McLean. af 
(6) The other, hemlock ; from Osquake, New-York.— 
J. Macauley. | 
(c) A third, white cedar; from Marcellus, Onondago 
county.—Humphreys. | 
8. Moss, incrusted by carbonate of lime. Very neat. 
9. A more ample specimen of incrusted moss; from the 
river Evan.—W. Carll. 
10. The sand tree, or arenated fungus of Michigan.— 
Schoolcraft. With a drawing. 
