1812. JET. 59.] COTJOT RUMFORD. 105 



The greatest light may be obtained by preserving the 

 heat of the flame. Thus several flat flames placed together, 

 in order that they may mutually cover and defend each 

 other against the powerful cooling influence of surrounding 

 'bodies, form a lamp that has answered far beyond my most 

 sanguine expectation. 



I lose no time in giving an account of the principles on 

 which it is constructed, in hopes that others may be induced 

 to assist in improving it. 



So far from being jealous of their success I shall rejoice 

 in it, and shall ever be most ready to contribute to it by all 

 the means in my power. 



On February 24 be had a paper read before the 

 French Institute on the 'Heat Manifested in the Com- 

 bustion of Inflammable Substances.' 



On August 1 be published his last essay, tbe eight- 

 eenth, of the 'Excellent Qualities of Coffee and tbe 

 Art of Making it in tbe Highest Perfection. 



In 1813 the founder of tbe Eoyal Institution once 

 more met Davy, then the great discoverer who by 

 his eloquence and genius had saved tbe Eumford In- 

 stitution from an early death. 



In the ' Life of Davy,' by Dr. Paris, it is said, probably 

 on the authority of Mr. Underwood, ' On November 

 10 they (Underwood and Davy) dined at Auteuil with 

 Count Rumford, at tbis time a prisoner in France, who 

 showed his laboratory to Davy. This was exactly eight 

 months before the poor, broken-hearted Count sank 

 into tbe grave, the victim of domestic torment and of 

 tbe persecutions of the French savans, instigated by 

 his wife, tbe widow of the celebrated Lavoisier.' 



The following account of Count Rumford's life at 

 Auteuil was probably also written by his friend Mr. 



