APPENDIX 



335 



Height of Water Column Reduced to that of Mercury (Barometer) 

 in millimeters. 1 



DENSITY AND VOLUME OF WATER AT DIFFERENT TEMPERA- 

 TURES (ACCORDING TO VOLKMANN). 



Volumetric apparatus and hydrometers are usually graduated 



to be standard at 15° C. Where extreme accuracy is required 



the following correction may be applied. 



1 From Bunsen. Gasometrische Methoden. 



