106 



THE HON. SIR CHARLES ALGERNON PARSONS: EXPERIMENTS ON 



EXPERIMENT. 



Heated iron filings and sodium carbonate No. 6 grit in tube on top 



(bright red) 30 minutes. 

 Heated iron and sodium chloride (bright red) 20 minutes carborundum 



No. 6 grit in hole in cast-iron lid on top. 

 Heated ferro silicon (15 per cent.) in carbon crucible till most of contents 



of crucible had volatilized, analysed dust from walls of vacuum pot and 



ingot remaining in crucible. 

 Heated iron, ferro silicon, ferro manganese, carbon and calcium carbide in 



carbon crucible. 

 Heated iron, iron sulphide, carbon and calcium carbide, cooled slowly in 



vapour of carbon bisulphide. 

 Heated iron, carbon, calcium carbide and ferro titanium in atmosphere of 



carbon bisulphide, pressure 1 mm. absolute. 

 Heated iron, ferro silicon, and ferro titanium in atmosphere of carbon 



bisulphide, pressure J mm. absolute. 



Heated iron, ferro titanium and ferro silicon 



Heated iron and carborundum in atmosphere of carbon bisulphide, pressure 



}. mm. absolute. 

 Heated reduced iron and lampblack, calcium metal placed near crucible 



to absorb nitrogen, pressure ^ mm. absolute. 



RESULT. 

 Nil. 



Nil. 

 Nil. 



Nil. 

 Nil. 

 Nil. 

 Nil. 



Nil. 

 Nil. 



Nil. 



EXPERIMENTS IN X-RAY VACUA. 



(See g. 1-2.) 



EXPERIMENT. 



Heated cast iron in carbon crucible to vaporising point, cooling by 

 radiation only. 



The following were all heated to temperature of vaporisation and 



radiation only : 



Heated calcium carbide 



Heated ferro-silicon 



Heated calcium carbide and No. 6 grit 



Heated nickel and No. 6 



Heated aluminium, magnesium, calcium carbide, and No. 6 grit . . . 



Heated ferro-silicon, nickel, and No. 6 grit 



Heated nickel, iron sulphide, and No. 6 grit 



Heated ferro-titanium and No. 6 grit 



Heated iron sulphide, zinc, and No. 6 grit 



Heated ferro-silicon, sand, and lampblack 



Heated reduced iron, sand, and lampblack to point of ebullition at 

 atmospheric pressure, then re-heated under vacuum, much ebullition 

 of gas from metal and many iron spherules thrown out of crucible. 



RESULT. 

 Nil. 



then allowed to cool by 



Nil. 



Nil. 



Nil. 



Nil. 



Nil. 



Nil. 



Nil. 



Nil. 



Nil. 



Doubtful. 



Large yield of rounded par- 

 ticles and plates from 

 ejected metal. These all 

 burnt in oxygen. Contents 

 of crucible yielded nothing. 



