422 On the Heat developed in Combustion 



experiment, we shall have 29.07 grammes of water which 

 ought to have existed ready formed either in the common 

 state of water or in some other state, in the 56.6 1 grammes 

 of alcohol condensed in the calorimeter. 



But the condensation of 29.07 grammes of steam into 

 liquid water ought to have of themselves furnished more 

 heat than we had, in the experiment in question, in the 

 condensation of these 29.07 grammes of elements of 

 water with 27.57 grammes of carbon and hydrogen, 

 which concur with these elements in forming the steam 

 of the alcohol which was condensed. 



If we apply a similar calculation to the results of the 

 experiments made with alcohol which contained more 

 water, the result of the inquiry will be still more strik- 

 ing. 



In the experiment No. 5 the alcohol employed was 

 of the specific gravity of 85,342 ; consequently 100 parts 

 of this alcohol were composed of 



77.88 parts of alcohol of Lowitz, and 

 22.12 water. 



And in the experiment 71.31 grammes of vapour of 

 alcohol were condensed. 



There were, therefore, in these 71.31 grammes of con- 

 densed alcohol, 



55.688 grammes of alcohol of Lowitz, and 

 15.622 grammes of water. 



In the 55.688 grammes of alcohol of Lowitz there 

 were 26.102 grammes of water, according to the analysis 

 of M. de Saussure; and this last quantity of water 

 (= 26.012 grammes), added to the quantity found above, 

 viz. 15.622 grammes, makes 41.727 grammes of water 

 which ought to have existed, either as steam or other- 



