104 
THE HON. SIR CHARLES ALGERNON PARSONS : EXPERIMENTS ON 
Experiment. 
Result. 
Passed CO over iron sulphide melted in salamander crucible in wind 
furnace. Top of crucible closed by massive iron lid containing on side 
inlet tube for CO and in centre 1 inch hole with perforated bottom, 
hole fitted with No. 6 grit. 
Same experiment repeated many times. 
Many clear plates, some 
with triangular markings. 
Would not burn in oxygen. 
(D) EXPERIMENTS IN VACUUM. 
(See figs. 10 and 11.) 
All experiments allowed to cool by radiation only unless otherwise stated. 
Experiments. Result. 
I-inch mould ; heated reduced iron and lampblack in carbon cup, pressure Large residue of crystals 
varied between f-inch and 3-inch absolute. Cooling by radiation only. which burnt in oxygen. 
Large amount of gas produced containing CO 95 per cent., hydrogen 
1 per cent., hydrocarbon 2 per cent., nitrogen 2 per cent. (Fig. 10.) 
High VacLbuta E.qieritaents xmder 'pressures 'varying fvoin 10 miii. to ^ mm. absolute. 
Heated iron and 10 per cent, sugar carbon in salamander crucible for 
half an hour by arc on top, vacuum about 1 mm. 
Iron, sugar carbon and iron sulphide heated in carbon crucible 15 minutes, 
then water allowed to enter through tap causing spherules to be ejected, 
vacuum about 1 mm. 
As above, but carbon bisulphide instead of water. 
Magnesia, lampblack and tar heated in carbon crucible. 
Alumina and borax fused in wind furnace then heated in carbon crucible 
in vacuum. 
Alumina, lampblack and tar heated in carbon crucible. 
Aluminium carbide, calcium carbide, magnesia, iron, carbon and tar, 
baked and placed in crucible, resistance heated in vacuum furnace, 
crucible of sulphur either side to give off sulphur vajiour in chamber. 
Crucible filled with iron and carbon, closed by carbon cover, hole bored 
in side of crucible and massive iron block placed opposite hole, 
contents boiled, deposit of carburized iron on block analysed, vacuum 
about 0 ■ 25 mm. 
Arc deflected by electro-magnet on to iron block, de})osit on block 
analysed, vacuum about 10 mm. 
Tungsten steel packed round with carbon in carbon crucible and heated 
to ebullition. 
Iron, lampblack, Prussian blue heated in carbon crucible by resistance 
heating. 
Carbon crucible containing potassium ferrocyanide, lampblack and 
reduced iron, inelted by resistance heating. 
Nil. 
10 per cent, of residue from 
ejected spherules burnt in 
oxygen. 
Nil. 
Metallic magnesium and 
magne-sium carbide pro¬ 
duced. 
Clear transparent alumina. 
Aluminium carbide formed. 
Nil. 
Nil. 
Nil. 
Nil. 
Nil. 
Nil. 
