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and with a wall of 3 mm. thickness was fused to the apparatus, 
which was cemented into a mounting for Caruerer experiments. 
The upper end of the combustion tube was fused to by means 
of an oxygen gas flame. After evacuation with a water-jet pump 
the combustion tube -was filled with a glycerin-water mixture, and 
screwed into a CanLerer-pressure-cylindre filled with the same 
liquid. Then a cilindrical glass jacket was put round the combustion 
tube by means of a rubber stopper prepared for high temperatures, 
in which jacket different liquids were electrically heated under varying 
pressure till they boiled (by means of the heating wire wrapped 
lh 
a 
Fig. 2a. Fig. 20. 
round the tube and drawn in fig. 2a). The rubber stopper was 
protected against the action of the boiling liquid by a layer of mercury. 
The condensation ring of the boiling liquid was always raised to 
above the extremity of the combustion tube, the temperature was 
