7<5 
tenchacea. 
gyanulata^ 
Ustacea, 
fu’^erulen- 
ta. 
squamosa. 
EARTHS. CALCAREOUS, lo. Creta. 
ORDER III. CALCAREOUS. 
Confifting principally of carbonate of lime. 
10. CRETA- Confifting of carbonate of lime and 
carbonic acid gas, and a kw extraneous iub- 
ftances: friable, effc rvefcing with and nearly 
totally Ibluble in acids: calcining in the fire, 
but not vitrifying in the ftrongefi degree of heat. 
Containing fmall and very minute fhells not cohering, not 
foiling the fingers, without liifire. 
Calx conchacea. S\li. nat, xii. 3. p. zo6. 
Hutnus concha-^ea. Cvonetp,m:n.J't:ei, 281. I.b. 
Humus aninialis conch cca. tf'alL/yH. i.p. 24. ». 8 H. 
Found on the maritime parts of Etruria, itaxony, and Wirtem- 
hurg, rarely covered with mould. 
Confiding of rounded quite glabrous milk-white opakc 
granulations, which do not ftain the fingers. 
Calx teftac. a, &c. Syfi war. xii 3. 208 » 8. 
Found on the korts of Afmfiort IJland, where it ferves as a ni- 
dus for the Telludo Mydas to lay its eggs in : it is compofcd 
of fliells and corals comminuted by the vavcs of the fea, or 
of the harder calcareous fubttances worn down and rubbed 
together by the torrents of rivers. 
m 
Produced by comminuted fhells, without luflre, not flaiii- 
ing the fingers. 
Calx tell ,cea, &c. nat, xii, 3. f. zot. 
Found on the coufts of England and France. 
Reducible to dufi, without lufire, rough to the touch, 
Ifatning the fingers. 
Native lime. Strwerby Brit, min. i. tnh. i. 
Native lirne. Kinssan min. i. p. 74, yj. 
Found near Bath, white, without lutre or trsnfparencv frac- 
ture earthy, and eafily rubs to powder: when mixed with a 
little oxyde of iron it becomes' ye'lowifh. 
With fomewhat greafy fnow-white Ihining Rales, which 
foil the fingers. 
Agaric mineral var. z. Kir^wan miner. p.-jS. 
Found near Gera: very friable, fading to duft in water, adheres 
to the tongue, and is eiinre.y foiubie in nitrous acid ; colour 
iometimes filvery-wiiite. 
