v^- 



108 Of fit Ik oh 



(1.) Iron doted with the above fait and glafs, 

 even in the brifkeft fire of a wind-furnace, not 

 to be brought to flux without calcination and re- 

 duction. (2.) Iron making a black flag. (3.) Iron 

 refufing melting with lead, and always fwimming 

 a-top, unlefs previoufly diverted of its metalleity, 

 and reduced to an earth ; whereas, otherwife, in its 

 metallic form, intimately entering into all metals 

 and femi-metals. (4.) Iron burning away fooner 

 than copper, becaufe more difficultly fmelting. 

 (5.) Iron, to be acted on by the magnet, bearing 

 as much gold as copper. (6.) Alfo as much filver. 

 (7.) Iron entering tin, forming therewith a regu- 

 lus, on which the magnet ftrongly acts. (8.) 

 "With zink forming a malleable regulus, like fil- 

 ver, yet hard, and not backward to the magnet. 

 (9.) Iron going into bifmuth in fuch fort, that 

 tho' the brittle regulus thence arifing, be confide- 

 rably impregnated with, nay, confift of above £ 

 bifmuth, yet, notwithstanding, anfwering the mag- 

 net. (10.) Ir on melted along with brafs, conti- 

 nuing ftill fubject to the magnetic virtue, where 

 the calamy is ftill obfervable from the yellow call 

 of fuch iron. (11.) The magnet alfo bearing re- 

 gulus of arfenic, prepared by means of iron. (12.) 

 Bearing fly-fione, Sublimed from mifspickel, or poi- 

 {on-pyrites ; alfo the being fmelted with iron. (13.) 

 But not at all bearing the regulus of antimony in 

 the iron, though I have made the trial in various 

 ways i neither the lapis de tribus, though metal - 

 lifing with iron', a circumflance I as much admire, 

 as others may be apt to difbelieve it. I fhall further 

 add, from my experience, that from iron and tin, a 

 quintal of each, I have procured one. quintal and i 

 of regulus ; from four quintals of bifmuth, and one 

 of iron, four quintals and i of regulus; from 



quint- 



