Emanuelis Swedenborgii ... Regnum subterraneum sive minerale de ferro : de que modis liquationum ferri per Europam passim in usum receptis : de que conversione ferri crudi in chalybem : de vena ferri et probatione eius : pariter de chymicis praeparatis et cum ferro et victriolo eius factis experimentis &c. &c (1734)
- 75 PARAGRAPHUS XIIX - Modus venam ferri coquendi recoquendique Her cynice . … ad Mittelberg rubescit ; ad Stollberg dantur venae diversi generis . Circa montem quendam marmoreum frangitur etiam vena ferri , erantque ante aliquot annos species 12 aut plures , hodie quot sint , nescio . Hae diversi mode & quidem secundum cujuscunque indolem calcinantur , scilicet unum genus…
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