181 
Hydrous Silicates. 
A large proportion of tlie hydrous silicates, among which may be 
particularly noticed the family of the zeolites, offer but scant interest as 
regards their application to useful purposes, although their crystallization 
and circumstances of occurrence render them attractive to the minera¬ 
logist and geologist. Others of them, however, and chiefly the amor¬ 
phous ones, are employed for a variety of uses, most of which are 
illustrated in the present case. 
1209. Datolite {Hydrous 
Silico-borate of Lime), in brilliant 
crystals of the oblique system. 
Bergen Hill, New Jersey. 
1210. Meerschaum, ficume de 
Mer, or ‘‘ Froth of the Sea ” {Hy¬ 
drous Silicate of Magnesia). 
Asia Minor {Natulki). 
1211. Meerschaum. 
Bursa, Natolia. 
Presented by W. J. Smith. 
1212 and 1213. Meerschaum, 
in nodules as imported into Europe. 
From Kiutayeh, Asia Minor. 
1214. Meerschaum, rough 
shape, as imported into Europe. 
From Kiutayeh. 
1215. Meerschaum, worked 
into a Pipe-bowl. 
1216. Meerschaum Pipe-bowl, 
coloured. 
1217. Serpentine {Hydrous 
Silicate of Magnesia). 
Anglesey. 
1218 and 1219. Serpentine. 
Lizard District, Cornwall. 
1220 and 1221. Serpentine, 
with Diallage. 
Lizard District. 
(Placed in the case beneath.) 
1222. Serpentine, with a little 
Diallage. 
Coverack Cove, St. Keveime, Corn- 
ivadl. 
1223. Serpentine containing 
Diallage. 
Near Kennick Sands, Lizard. 
1224 to 1226. Serpentine with 
Diallage, polished. 
Lizard District. 
(No. 1226 is placed in the case 
beneath.) 
1227 to 1230. Serpentine, 
fibrous varieties, polished. 
Lizard District. 
1231 to 1233. Serpentine, 
Avorked into cylinders and polished. 
Lizard District. 
1234 to 1245. Polished Slabs 
of varieties of Serpentine, Dial¬ 
lage occurring in some, and Steatite 
in others. 
Lizard District. 
(In the hall Avill be found some fine 
examples of Corni§h Serpentine, worked 
into forms illustrating’ its application to 
purposes of ornament.) 
1246. Small Obelisk of polished 
Serpentine. 
Portsoy, Co. Banff, Scotland. 
Presented by Mrs. P. Pranks. 
1247. Serpentine, AAdth dis¬ 
seminated Garnets, AAmrked into a 
small canister. 
Zohlitz, Saxony. 
Presented by Mrs. Birch. 
1248. Serpentine Cup. 
From the Bandinel Collection. 
1249. CiiRYSOTiLE, an asbesti- 
form A^ariety of Serpentine. 
Montville, Morris Co., New York. 
1250. WiLLiAMSiTE, a variety 
of Serpentine, polished. 
Texas, Lancaster Co., Pennsyl¬ 
vania. 
1251 and 1252. Antigorite 
{Hydrous Silicate of Magnesia). 
Valley of Antigorio, Piedmont. 
1253. Talc {Hydrous Silicate 
of Magnesia). 
Smithfield, Rhode Island, U.S, 
1254. Talc. 
Croey Head, Co. Donegal, Ireland. 
