pfteeipue Globoforum* %\$ 



g) Cette fubftance cft plus rare au milieu, &vers 1'eeorce phis dure, 

 & en tjuelqiie forte graveleufe. Vid. Gleditschii Obfervations 

 fur la veritable Ofteoeolle de h Marche de Brandenbourg, $. 17. 

 quae obfervatiorres inferta; funt a ¥ Hiftoire de P Academfe Roya- 

 le des Scienees & belles lettres de Berlin, Ann, 1748. p 4 40. Hi9 

 ibidem p. 52. fqq. fubjeclae funt Experiences chyiniques faites fur 

 1? Oiteocolle de la Marche par M. Marggraf» 



§. XLIL 



Mitto alias fpecies globulorum lapideorum r terris lapidi- 



busque praegnantes: & adglobuios eonvertor, quifalia in utero 



recludunt. Deficientibus aliis exernplis ad pyritas globofos pro- 



voco , qui metallica- falfe continent. Frequentes occurrunt 



noduli pyritacei variae magnitudinis. In plerisque venter iive 



crufta eft ferruginofi & aeruginofi coloris ; maiTa vero interna 



colore ex fubviridi luteo : conftans in nonnullis ftamine con- 



tinuo folidO} in plerisque autem fibris innumeris ex centro ad 



peripheriam tendentibus. ExemplafuppeditantMufea^ &lon- 



ga eorundem enumeratio in Woodwardi Gatalogo foffilium 



Anglicorum^) evolvenda. Accedunt fpecimina globulorum 



pyritaceorum intus cavorum& mafTa vel homogenea^vel hete- 



rogenea repletorum* Pyrites rotunda feu deprefFa lenticulari 



figura r extus colore obfeure fufco memoratur Woodwardo &), 



qui in alio pyrite hemifphaericse figurae inclufus fuit, in morem 



glandis capfulae fuae inclufee. Eidem memoratur c) Pyrites ro- 



tunduSyfubftantiae uniformis &non ftriatce^in cujus centro re- 



conditaeft maffa Spathi femipellucidi, craflkie nucis mofchatae, 



Henckelivs d) etiam mentionem facit nodulorum pyritaceo- 



rum T in ventre mafTa quarzofa^ aut felenitica, aut fpathofa 



praeditarum. Alio loco e) aliorum meminit cavernoforum feu 



intus aliqua ex parte vacuorum. Quae defcriptiones omnes 



indicio funt, formationem ejusmodi globulorum pyritaceorum 



eadem ratione, ac in Aetitis & Ventribus cryftallinis explican- 



dam effe. Quando enim terrse ferri compoti, per fe alcalicae 



dd 3 (fupra 



