12 
saloon, ments, or eases. Each of these has its number 
Nat. Hist, inscribed on the upper part of the middle square 
of glass.* 
{Case 1.) Contains the combustible substances, 
among which may be particularized the different 
varieties of bitumen, from the fluid naphtha, to 
the solid jet (pitch coal of Werner) ; a suite of the 
elastic bitumen from Derbyshire, in its different 
states of induration ; with this is placed an in- 
flammable fossil substance found by Humbolt in 
South America, where it is called Dapeche, 
which has several of the properties of the com- 
mon caoutchouc or India rubber ; also the retin- 
asphaltum found at Bovey, and a peculiar re- 
sinous substance lately discovered in digging 
the tunnel at Highgate. — To the varieties of 
amber is added some wood converted into brown 
coal, and a small capsular fruit, both of which 
are found, together with that inflammable sub- 
stance, on the coast of Prussia.— The mellite 
or honey stone, strictly speaking a saline 
substance, but geognostically related to amber, 
near 
* Most of these massive fossil substances which, though mi- 
xeralogically simple, may be considered as objects of geology (such 
as varieties of coal, basalt, ciay-shue, &c.,) will find a place in an 
apartment to be appropriated for the reception of rocks and other 
geological specimens. 
