114 



Scientific Proceedings^ Royal Dublin Societij. 



Tablk II. 



Eelation between the distance of junction from the closed end and the 

 galvanometev deflection : — 



(«) Length of explosion-tube, 

 Diameter of tube, 

 Initial pressure of air in tube, 

 Pressure in reservoir, 



Distance of'junctiou from 

 end of tube, 



2-5 cm. 



5-0 „ 

 10-0 „ 

 15-0 „ 

 20 „ 

 30-0 „ 

 40-0 

 500 

 600 

 70-0 

 80-0 

 85-0 



IS 30 45 60 ■ 



cm. 

 Distance of Junction fhom end of Tube. 



Curve la. — Showing relation between deflection and distance of junction from closed end 

 of explosion-tube. Tube 3 feet long. 



