ii8 EARTHS. ARGILLACEOUS. 31, Argiila, 
■viridis. A little greafy, foft, compail, green, fwelling in the fire 
and becoming firll blackifli, then red, and at lall 
yellow. 
Bolu^ viridis. nat. xii. 3. p. 203. n. 13. c. 
7 ’erj-a verde. Crontl min. feS. 86. I . V. 
Foiled on Mount Baldo^ S^edenj Normandy, Saocony, and Bij* 
hernia, frequently within the Almund Hone; makes a green 
mark. 
'Tripolitana. Harlb and dry, foft, ligl-tifli, adhering to the tongue, 
lytehing with difficulty, when rubbed wiili metal al- 
fuming a metallic fpiendor. 
Argilla fcabra. Syjl. nat, xii. 3 p. 202. n. 8. 
Tripeia folida. U'all.Jyst. min. i,p. 91, n. 1. 
Tripoli. Kif'vtan mineral, i.p.zoz. 
Tripoli. &chmci£er miner. \ p 175. 1 hqmj'on chem. p. 
Found in the fl^nd Tanna in the South Sea', in the kingdom of 
Ittnis, in Naples, at the river Uda 'm Rsijp.a, Snxcdcr., Bianaers, 
Bohettfia, Aufirin, and various parts of Germany, in ilratificd 
m untains and not uijj'rcqucntly mi.xcd with fulpluir; colour 
whitifli, ycllowiili-grey, cream and ochre-yellow ; is fou d 
fnlid, has adui. earthy appearance when broken, and breaks 
into indeterminate obtufe regular piecet, is loft and fandy 
between the teeth, and abforbs water wiih a iioife: docs not 
fiain the lingers, and frequently reddens when heated : con- 
tains filica 90. alumina 7. iron 3, Hafst. 
fumescens. Reddeuiug a little when heated, fpoiigy when dry, greo- 
(liiy imbibing water wdtli iniiimelcence and retaiu- 
ing it. 
Argdla mixta. Syst. nat. xii. 3. p. 203. «. 15. 
Argilla vitrclcens. H'ail. ftst. min. 1, p. 43. «, 2. 
I'oui'd every where in barren plains, particularly in Sweeden, 
and on account of its iluAuation and trembling is very dan- 
gerous to travellers; for the lurlace I cing dried up is elaftic 
like leather, while tl e trials under it is of the confiilence ol 
pultice. 
^randa-'va. Meagre, fomewhat plaflic, growing rcdtlilli and harden- 
ing in the fire, triable and a little dufly when dry» 
llowly imbibing water with intumefcence. 
Argilla mixta glarea. Syji. nat xii. 3. p, 204. «. t6. 
Aigilla glarea mixta. Waller fyji, i. p, 56. «. 12. 
hound in S’vseden, particularly in DalecarUa, grey, brown, or 
rcddilh, and in the lummer becomes fo hardened, as not to be 
broken with a hammer or divided by a wedge : when lifted 
it is an excellent material in the formation of bakers’ 
ovens. 
