8o EARTHS. CALCAREOUS. 12. Spatum. 



arenafium. Diaplianous, with the foliations irregularly cluftered. 

 Spatum confulurn, ^yst. nat. xii. 3 p. 50. n 9. 

 bparum particulis dirperfi-, PFalL I'yst. i />, 138. n 3. 

 f Found in SnveJen and Saxony ^ white, grey, red, brown, ot 



green, 



felluadujtu Pellucid, nyalin<*;. 



S pel turn fpeculare, ^vit- nat. xii 3- ^. 48. ». I. 

 Spatum pellucidum. IValLfyst i./). 139 «, 4. a, 

 Spatum rhomboidalc. Cfonst. jjitn. /eSi. 19. i.a, 2. 1^ 

 Androdamas Plinii, Scheuchz it. Jlp. ^. 324. 542. 



2, Pellucid, tinged, 



Spatum folubi'e. Syst. nat xii, 3. /• 50. «.6. 

 Sparum coiilpa'ctuili, iW»/". Tejs. 16 ». 8» 

 Ji^a//. ^7/. »//«. T. /). 1 39. //. 4. b, c, d, e. 

 Cronst mitt fefl. lO. 1. a. 2. 2. 



3. Doubling tViC dbjec^s by refrad^ion. 

 Spatum folubiie. Syst. nat. xii. 3./'. 48. ». 2. 

 Spaium rhomhoidale. Cromh inih. feSi. 10. ^r, i. a. I. 

 Spatum informc raolle. Carth^ Mn, 12. 



Sp turn pellucidum, WalUfyst. mm, 1./. 140, n. 5. 



Spatuih alcalinum. IVolterJld. mm. 1 9. 



Found in RnJJia, Lapland y Nor<iuayt Svoedeiy and other moiin* 

 tainous parts of Europe^ the variety 3, wiiich doubles the o'l* 

 je(ft by refraction, chiefly in Iceland: colour yellow or yt\* 

 iovvifh, olive, greenifh, blueilh, (moke-colour, blackifh» 

 rarely red or veined ; when expufed to heat, it parts with its 

 trani'parcncy and carbonic acid, and after calcination fome- 

 ilmes ihinesin the dark, if thrown upon hot coals, 



B. Of a peculiar figure i 



telluksufru With the furface divided iuto cells. 

 Found m Hungary and Hcrcynia, 



staidfiiii' Of a more or lefs cylindrical form. 



2. Of a botryoidal figure, or refembling a bunch of grap«fs* 



3. Of a Ihrubby appearance. 



4. Refembling a branch of coral. 



Coral-form carbonate of lime. Soiuerby Bf. min, /, 9. 



Found in Bohemia ^nd Hungary, tne coralliform variety plenti* 

 fuliy in the loole marl ut 67. Ma-xvst Cornivaliy wnere it is 

 ulcd for manure, knd. in North IVaies. Its appearance has io 

 much the refemblance of a coral as to be commonly miftakeil 

 for iuch, but It app'^ars on examination to be aggregations of 

 calcareous earth ramifying m the loft marl : colour whitc^ 

 ycliowifh-white, or pale ferruginous from a fmall mixture of 

 iron. 



cum* 



