33 
Calcareous tuf\ to which are added some easts of • 
medals, made at the baths of San-Felippe in Tus¬ 
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¬ 
stone, the most esteemed variety of which is that 
from Carinthia, called lumachella or fire marble; 
and some varieties of anthraconite called also ma¬ 
drepore stone from a distant resemblance this sub¬ 
stance bears to some petrifactions of the order of 
corals; fetid limestone, &c. 
(Case 23.) This case is occupied by suites of 
hrown spar and of arragonite. Among the speci¬ 
mens of the former are many of the scarce fibrous 
varieties, which were formerly referred to common 
fibrous limestone; among the latter are Werner’s 
columnar and aciciilar arragonite, as also fine spe¬ 
cimens of the remarkable coralloid variety from 
Eisenertz in Styria, formerly called flos ferru 
(Case 24.) contains the fluaies 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- 
cerite, being a fluate of lime^ yttria and cerium; as 
also of a substance composed of fluate of yttria and 
oxide of cerium, with only a small portion of lime, 
D but 
\ 
SALOON. 
Nat. Hist. 
