62 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



thermal expansion due to a change of temperature of 20° was 0.0013 

 inch for a mean displacement of about 0.070 inch. As far as self 

 consistency goes, the measurements on carbon bisulphide are among 

 the best of the series. 



TABLE XI. 



Volume of Carbon Bisulphide. 



The reduction factor from the mathematical formula was 0.9947, 

 showing pretty nearly average compressibility. 



