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room viii. — several varieties of compact limestone (mar- 
Nat.'hist. bles) ; Cottam marble; Stirian shell or luma- 
chella marble; Tiree marble; dolomite; fluor 
spar from Derbyshire, Durham, &c. ; compact 
and fibrous gypsum ; selenite. 
( Div . 3.) Gypsum, selenite, &c. ; compact 
and lamellar barytes, &e. : strontian ; boracite. 
Labrador spar; common feldspar ; amszone stone. 
Adularia: Prehmte; rock crystals, amethyst 
druse with harmotome ; flints drused with small 
rock crystals, &c. 
(Div. 4.) Rock crystal : topaze coloured, 
smoky, &c. ; Bristol diamonds ; rock crystals, 
including various substances, as chlorite, rutile, 
&c, ; quartz crystals, on fluor, &c. ; hacked' 
quartz, rose quartz ; feldspar and quartz avasi¬ 
tu rine ; amethysts ; flexible sandstone; perfect 
prismatic crystal of emerald, inbedded in cal¬ 
careous spar ; sapphires and other precious stones 
in rings, &c. Garnets loose and bedded in gneiss, 
steatite, &c. Vesuvian, commonly called vol¬ 
canic hyacinth. A rough diamond. Beryll, 
called aquamarin, shorl-beryll, Saxon and Bra¬ 
zilian topazes. Axmite or thumerstone. Chry- 
soprase. Actinote ; tremolite, &c. 
(Div. 5.) Heliotrope, called also bloodstone ; 
Egyptian jasper, known by the name of Cailiou- 
d’Egypte or Egyptian pebble ; striped or ribband 
jaspers; 
