606 Life of Count Rumford. 



brought the results of series of experiments on the 

 combustion of wood and charcoal, and on the heat 

 developed in the combustion of different kinds of 

 wood.* 



There was read before the Royal Society, on January 

 13, 1812, a paper of Rumford's, being An Inquiry con- 

 cerning the Source of the Light manifested in the Com- 

 bustion of Inflammable Bodies. 



Three more of the productions of Count Rumford 

 are numbered as Essays in the London edition of his 

 works. Essay sixteenth is On the Management of 

 Light in Illumination, etc. 



Essay seventeenth is On the Source of the Light 

 manifest in Combustion. 



Essay eighteenth treats Of the Excellent Qualities 

 of Coffee, and the Art of making it to Perfection. 



Sarah says that her father resumed for the most part, 

 while she was with him, his former habits of life. He 

 took her .with him on his occasional visits to friends, 

 and was glad to have her help in entertaining the few 

 intimates at his own house. She took daily drives with 

 him on pleasant days, and visited all the interesting 

 sights and objects of Paris and its environs. It would 

 appear that the construction of the carriage and the 

 peculiar garb, yet to be mentioned, in which the Count 

 arrayed himself, to say nothing of any quality or inter- 

 est that might attach to the daughter, attracted the 

 notice of passers-by, even in that cosmopolitan city. 

 Sarah says that, as they were driving, her father would 

 often go in to the meetings of the Institute, and stay a 

 short time, leaving her in the carriage. 



The few intimate friends of the Count to whom refer- 



* Bibliotheque Britannique, Vol. LII., and Nicholson's Journal, June, 1812. 



