1796. JET. 43.] COUNT EUMFORD. 49 



acquainted in order to their becoming zealous converts to 

 our new philosophy, and useful members of our community. 

 Pray read once more the 'Proposals,' published in my 

 second essay. I really think that a public establishment 

 like that there described might easily be formed in London, 

 and that it would produce infinite good. I will come to 

 London to assist you in its execution whenever you will in 

 good earnest undertake it. 



The third essay was on ' Food and Feeding the 

 Poor ; Rumford Soup and Soup-Kitchens.' The fourth 

 on ' Chimney Fire-Places.' The fifth on ' Several 

 Public Institutions Founded in Bavaria ; on Nurseries 

 for Grenius ; for Horses and for Cattle.' 



During 1797 and 1798 Rumford published in En- 

 gland a second volume containing four essays. 



These were on the 'Management of Fire and the 

 Economy of Fuel;' on the 'Propagation of Heat in 

 Fluids,' extending to liquids, the doctrine which he 

 had before advanced respecting elastic fluids ; on the 

 ' Propagation of Heat in various Substances ; ' and an 

 ' Experimental Inquiry concerning the Source of Heat 

 Excited by Friction.' 



An account of this last essay must be given here, 

 because from it Count Rumford derives his chief 

 scientific reputation. 



Whilst directing the military affairs of the Duke of 

 Bavaria he had to organise the field artillery, and he 

 found no cannon foundry in Bavaria. The arsenal 

 at Munich was filled with cannon, but by far the 

 greater part of them were perfectly useless, being too 

 heavy to be moved. There was a very good foundry 

 at Mannheim, the capital of the Elector's dominions on 









