THE 



f 



SCIENTIFIC PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Vol. XYI. (I.S.), Ifo. 17. FEBRUARY, 1921. 



A SENSITIVE VALVE METHOD FOR THE 

 MEASUREMENT OF CAPACITY, WITH 

 SOME IMPORTANT APPLICATIONS. 



BY 



JOHN J. DOWLING, M.A., E.Inst.P. 



[A uthors alone are responsible for all opinions expressed in their Communications.^ 



DUBLIN : 



PUBLISHED BY THE EOYAL DUBLIN SOCIETY, 

 LEINSTER HOUSE, DUBLIN. 

 WILLIAMS AND NORGATE, 

 14, HENEIETTA STEEET, COVENT GARDEN, LONDON, W.C. 2. ^^''f^n'Wi \i)^' 



1921. ^^ 



h urn 21 



Price Sixpence. 



