450 



Dr. G. Gore on the Influence of Proximity 



fixed in the tubes by means of melted shellac, and their 

 external portions were cotton covered and varnished. The 



Fig. 3. 



electrolyte was composed of an 18-per-cent. preboiled solution 

 of zinc sulphate ¥ V saturated with washed chlorine gas. 



Description of Apparatus. 



The annexed sketch (fig. 4) represents the form of 

 apparatus, but only six tubes are included in order to 



Fig. 4. 



simplify the drawing. The entire apparatus was about 

 24 inches long, 12 inches wide, and 5 or 6 inches high. 

 A, A.' represent the bars of lead ; each bar was 22 inches 

 long, 1 inch wide, and 1J inch deep, and weighed about 

 10 J lb. Each bar also had 40 semicircular grooves filed 

 in one of its surfaces so as to form circular holes when in 

 opposition, through which the glass tubes and connecting 

 wires could freely pass without touching the lead *. The 



* Subsequently, plain bars without grooves, each weighing about 

 31 lb., were regularly employed, and only one pair was used. 



