6 DR. EDWARD C. EDGAR ON THE ATOMIC WEIGHT OF CHLORINE. 



quartz tubulures. Into the two small tubulures C and C t (shown both in fig. 3 and 

 fig. 4) were fitted two platinum wires D and Dj, sheathed in glass except for their 

 extreme tips ; these sheaths were ground into the tubulures and the joints protected 



Fig. 4. 



by caps containing mercury. By passing sparks between the tips of the wires, the 

 chlorine, from the chlorine condensation bulb E (fig. 3), could be ignited easily at the 

 tip of the quartz jet F. The bulb E and the palladium bulb L were connected with A 

 by the ground tubulures J and K respectively. 



JL-5? 



M^ 



Fi g- 5. Fig. 6. 



7. The Evacuation Apparatus. To the tubulure M was attached, by a ground 

 joint, the evacuation apparatus. This consisted of a quartz tube Q (shown in fig. 3 



