21 
115. Silico Calcareous Titanite, in Talc, T.— Pied- 
mont. 
116. Brookite. — Jurinite, Arkansite. — TilanicAcid,T. — 
Mount Snowdon, Wales. — A fine and rare crystal. Brookite 
has been recognised by Mr. R. Brough Smyth in quartz brought 
by Mr. Gladman from the Baw-Baw diggings, Gipps Land, and 
he possesses numerous fine specimens of this mineral. 
117. Cyanide and Nitride of Titanium- — T. — 
CoLTNEss Iron Works. — Found crystallized on the slag refuse of 
the iron smelting works, and long supposed to be pure Titanium. 
118. Titanite. — Titanic Acid, on Quartz, T, — St. 
GOTHARD. 
119. Anatase. — TzYamc Acid, on Adularia, ^' '^^^E^-^-^^y^^^'^r^ 
GoTHARD. — In small dark octahedral crystals. ^ 
120. B^iUllfi*— r2Vamc ^cit//r.— St. GoTHARD. ^"-^ /^tS^ 
121. Witherite- — Carbonate of Barytes, T. — Hexham, 
Northumberland. — Fine crystals. This mineral is chiefly used 
in the preparation of salts of barytes for the manufacture of 
colored fires for theatres, firework makers, Sec, and for scientific 
chemical purposes. 
122. Heavy Spar. — Stilphate of Barytes, and Globular 
Blende, T. — Hungary. 
123. Heavy Spar. — Sulphate of Barytes, with Plumose 
Antimony and Zinc Blende, T. — Felso-banya. 
124. Heavy Spar. — Sulphate of Barytes, on Gneiss, T. — 
Freyberg. 
125. Heavy Spar. — Sulphate of Barytes, Amorphous, T. — 
Arran, Scotland. — This mineral is carefully ground, and boiled 
with oil of vitriol, to remove any iron or other foreign body, then 
washed and dried. The result of these operations is the production 
of a fine white powder, sold for the purpose of adulterating white 
lead, colors, &c. It is worth, when thus prepared, £4 to £o per 
ton in the English market. 
126. Stang-enspath. — Sulphate of Barytes, — Heavy Spar, 
T. — Freyberg, Saxony. 
127. Heavy Spar.— iS'^/pAa^co/^arz/^e^/T.— Cumberland. 
