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. 



From Bunsen. Gasometrische Methoden. 



