358 Description of a new Boiler, ttc. 



the Society is particularly intended to serve as a steam- 

 boiler, but it may undoubtedly be applied to other pur- 

 poses. Having shown it to M. Auzilly, son of a con- 

 siderable soap-manufacturer of Marseilles, he thought 

 that it might be employed with advantage in the making 

 of soap ; and from what he told me of the process, and 

 of the boilers employed in that art, I am persuaded 

 that the experiment would succeed perfectly. 



But, after all, it remains to be determined whether it 

 would not be still more advantageous to employ steam 

 as a vehicle of heat in the making of soap, instead of 

 lighting the fire under the bottom of the vessel in which 

 the soap is made. 



The result of an experiment which we are to make, 

 M. Auzilly and myself, will probably throw some light 

 upon this question. 



[This paper is printed from Nicholson's Journal, XVII. (1807), 

 pp. 5 - 10.] 



