THE 



SCIENTIFIC PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Vol. SIII. (N.S.), lo. 5. MAT, 1911. 



A METHOD OF EXACT DETERMINATION OF 

 THE CONTINUOUS CHANGE IN ABSOLUTE 

 DENSITY OF A SUBSTANCE, e.g. WAX, IN 

 PASSING THROUGH ITS FUSION STAGE. 



BY 



WILLIAM J. LYONS, B.A., A.R.C.Sc. (Lond.), 



eoyal college of science foe ireland. 



[communicated by PEOFESSOK W. bkown, b.sc] 



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



DUBLIN : 



PUBLISHED BY THE EOYAL DUBLIN SOCIETY, 



LEINSTER HOUSE, DUBLIN. 



WILLIAMS AND NORGATB, /<^SOnian /nsW^> 



14, HENRIETTA STREET, COVENT GARDEN, LONDON, W.qC *^ ^'' 



19H. \ AU6 14W' 



Price Sixpence. 



