The density found was in accord with that given by Berthelot, namely, 1264.
Evidently, what Werner, Siemens and Berthelot held out, is approaching reality.
The evidence collected by Berthelot has an important bearing on the history of chemistry.
The latest determination, however, made by Berthelot and Matignon shows it to be 315.7 calories at constant pressure.
Prof. Berthelot sketched the probable state of chemistry at about the year 2000.
