specific and Latent Heat of Vaporizatioi. 



7 



In the two experiments with quartz marked * a very fine 

 platinum wire was used for suspension in place of the coarser 

 one used before, and it was found that this had a very large 

 influence on the constancy of the balance. In the determi- 

 nation of the specific heat of platinum it was found that the 

 quantity taken was not enough to give an accurate result. 

 The specific heat of platinum is so low that the quantity of 

 water condensed was small. 



Latent Heat of Vaporization of Alcohol. 



These curious results seem to be due to varying amounts 

 of water mixed with the alcohol used. In the first case A, is 

 actually greater than in the case of water vapor. It is, how- 

 ever, possible that some of the condensed alcohol may have 

 dropped off, though this is hardly likely in the last case where 

 the quantity condensed was small. This substance was not 

 further investigated. 



201 



