102 



THE HON. SIE CHAELES ALGEENON PAESONS : EXPERIMENTS ON 



EXPERIMENT. 



Phosphate of iron, covered with olivine in carbon crucible, heated by arc 

 Olivine, iron and graphite, melted in carbon crucible by electric arc . . 

 Iron, carbon and chromium, 1 per cent., fused in carbon crucible, cooled 



in water. 



Melted olivine in carbon crucible, added calcium carbide, covered with a 

 layer of sand, fused and allowed to cool slowly. 



Fused sodium carbonate and sand, added calcium carbide 



Fused sodium carbonate, silica, sodium chloride, calcium carbide and 



graphite. 

 Melted iron in carbon crucible, then forced naphthalene vapour through 



the melt with arc still on, cooled in water. 

 Carbon bisulphide vapour blown through molten iron charged with 



carbon, cooled in water. 

 Superheated steam blown through carbon tube into cast iron melted by 



arc in carbon crucible, cooled in water, large crystalline deposit round 



carbon tube. 

 Same experiment repeated many times and carbide mixture* added while 



cooling before steam applied. 

 Iron 20 per cent., magnalium 20 per cent., calcium carbide 30 per cent., 



sand 30 per cent., melted in carbon crucible by arc and then water 



added. 

 Iron melted in carbon crucible, aluminium carbide and silica added, 



stirred and then sulphur dioxide blown through for half an hour, 



quenched in water. 

 Steam and benzene blown through carbon tube into silicon carbide and 



iron melted in carbon crucible by arc. 

 Poured iron highly charged with carbon through narrow git into massive 



steel mould closed at bottom by breech screw, no mechanical pressure 



exerted on breech screw. 

 Did same with plunger forced down git ; no pressure from expansion on 



setting. 

 Passed CO through molten iron in carbon crucible, poured melt into the 



above mould. 

 Melted iron, added 5 per cent, zinc and poured into the above mould . . 



Poured molten carburized iron into molten zinc 



Olivine fused in small carbon crucible, stirred with a graphite rod, and 



oxycoal gas blowpipe played on the molten surface, covered melt with 



graphite, and cooled slowly. 



Melted olivine and 10 per cent, graphite in carbon crucible, oxycoal gas 

 blown through, then water poured on. 



Same as above but "blue ground" in place of olivine, granite-like mass 

 formed. 



Iron melted in carbon crucible, bismuth added, cooled in water .... 

 Heated iron and carbon, and plunged yellow diamond into it when near 

 setting point. 



EESULT. 



Nil. 

 Nil. 



One crystal, 0-5 mm. long, 



which burnt in oxygen. 



Nil. 



Nil. 

 Nil. 



A few crystals. 

 Doubtful. 



About 10 per cent, burnt in 

 oxygen. 



Same result. 

 Same result. 



Same result. 



Nil. 



Fig. 9. 



Nil. 



Nil. 

 Nil. 

 Nil. 



Nil. 

 Nil. 



Nil. 

 Etched and pock marked. 



Carbide mixture = CaC 2 1, Si0 2 2, A1 4 C 3 3, FeS 16, Mg 2 parts by weight. 



