a 
add 
localities around, and from the depth, in some instances, of 
fifty feet, and even more. , 
16. A row of plumbago and graphite specimens. 
17. A range of pyritical productions, frequently asso- 
ciated with the lignite, or mineralized wood. Many of the 
original pieces have crumbled down by decomposition, and 
some of these give indications of changing to copperas 
and alum. 
18. Several specimens of adipocire, or fossil fat: 
(wu) Mineral tallow, white and compact; found at Cata- 
raugus, Chatauque county, New-York, four miles and one 
half south of Lake Erie, at the depth of about four feet, 
by a person digging a well on the declivity of a small hill, 
in somewhat marshy ground. ‘The piece from which the 
two present samples were taken, was about two feet and a 
half long; and near it was discovered another. six feet 
long! 1817.—J. Hull. 
(6) ‘The lean of beef changed to fat, by long lying in 
the water of a well near Warren-street, New-York. 1819. 
(c) The fatty matter into which a woman was converted, 
after lying in the grave thirty-three years. ‘The discovery 
was made by the disinterment necessary for the improve- 
ment of the city at the North Park, east end of the Insti- 
tution. 
(d) Factitious adipocire. 
19. American copal, as dug out of the ground in Costa 
Rica and Guatimala ; some of the pieces containing very 
neat and perfect forms of insects. 
20. Spunk of the pine and other trees. 
21. A singular kind of mineral resin, variegated with 
brown and yellow; found near Guayaquil, and conjectured 
to be a new kind of fossil bitumen; probably like the 
copal, the production of some tree.—Ridgeley—F oote. 
22. Petroleum, from Medina county, Rocky River, 
Ohio, 40 miles from the nearest coal-mine, from a spring 
furnishing eight gallons a day.-=J. W. Clark. 
23. Half a dozen ferrwginous artieles : 

