( 17 ) 
(Shelf 7 .) Hornblende, and hornblende slate, room viii. 
serpentine ; compact limestone; native sulphur; Nat. Hist. 
coal.—Lavas from Owhyhee. 
* VOLCANIC PRODUCTIONS. 
A collection of volcanic products, from Mounts 
Vesuvius, Somma, andAltna; vesicular, slaggy, 
glassy lavas, tuffas, with several other volcanic 
ejections : leucites; vesuvians in a calcareo-mi- 
caceous substance, &c. 
ROCK STONES FROM GERMANY. 
From the Hartz. 
(Shelf 1,) Granite of various mixtures ; fine CASE 
and coarse grained grey wacke; roofing and 10r 
other varieties of clay slate. 
(Shelf 2.) Trapp ; jaspers of various colours 
and variegation ; several kinds of clay and clay- 
slate ; hornstone, &c. 
[Shelf 3.) Amygdaloid; serpentine; green 
and red porphyry, &c, 
[Shelf 4 ) Sandstones with and without im¬ 
pressions of shells, &c.; several varieties of com¬ 
pact limestones (marbles), &c. 
(Shelf 5.) Compact limestones ; marl slate; 
roestone; compact gypsum (alabaster), earthy 
gypsum, &e. 
CASES 
8 & 9 . 
D 
From 
