Specific Volume of Camphor and of Borneol 



determined 

 with proximate accuracy. 



By 

 FVIilsuru Kuhara, Ph. D. 



The iiKitcTial.s employed in the experiments were ordinary 

 «•oinmercial camphor and borneol, purified by repeated sublimation. 

 Their melting and boiling points* were foimd to he as follows : 



In these determinations a number of experiments were repeated and 

 in each nece.sisary corrections were made. 



The determination of the s[)ecific gravity of liquid c;un]3]ior 

 and of liquid borneol was made witli the use of a cylindrical 

 .specific gravity bottle of a small size whose capacity had carefully 

 been ascertained by filling it with boiled distilled water. Either the 

 camphor or the borneol was fused in a long cylindrical ve.ssel over 

 the paraffin bath, and rlie specific gravity bottle and its stopper, tied 

 separately witli platinum wire, were both introduced into this C3dindri- 

 cal vessel and heated together with the melted camphor or borneol. 

 As the boiling point of the liquid camphor and of the liquid borneol 

 is always found a few degrees higher than thit of the vapour, the 



• In most text-books the melting and boiling points of camplior are given to be 174° and 

 201° respe:;ti7ely, and the boiling point of boi-neol to be 21i°. 



