Calcareous taf; to which are added some casts of saloon. 
medals, made at the baths of San-Fellppe in Tus- natThist. 
cany, where moulds of medals, gems, &c. are placed 
in convenient situations to receive the calcareous 
deposition.—As a continuation of the compact lime¬ 
stone in the last case, we have in this, the shell lime- 
stoney the most esteemed variety of which is that 
from Carinthia, called lumachella or fire marble; 
and some varieties of aiitliraconite called also ma¬ 
drepore stone from a distant resemblance this sub¬ 
stance bears to some petrifactions of the order of 
corals ; fetid limestoney &c. 
(^Case 23.) This case As occupied by suites of 
hroivn spar and of arragoniie. Among the speci¬ 
mens of the former are many of the scarce fibrous 
varieties, which w^ere formerly referred to common 
fibrous limestone; among the latter are Werner’s 
columnar and acicular arragonite, as also fine spe¬ 
cimens of the remarkable corailoid variety from 
Eisenertz in Styria, formerly called ferri. 
(Case 24.) contains fluates of lime. Among 
the numerous varieties of fluor spar may be parti¬ 
cularized the rose-coloured primitive crystals from 
Chamouni; the chlorophane from Siberia; the va¬ 
rieties called fortification fluor; earthy and compact 
fluor, &c. To these are added specimens of yttro- 
ceritCy being a fluate of lime, yttria and cerium ; as 
also of a substance composed of fluate of yttria and 
oxide of cerium, wdth only a small portion of lime, 
D but 
