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 he had a paper read before the French Institute on the ‘Heat Manifested in the Combustion of Inflammable Substances.’ On August 1 he published his last essay, the eighteenth, of the ‘Excellent Qualities of Coffee and the Art of Making it in the Highest Perfection.’ In 1813 the founder of the Royal Institution once more met Davy, then the great discoverer who by his eloquence and genius had saved the Rumford Institution 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 this time a prisoner in France, who showed his laboratory to Davy. This was exactly eight months before the poor, broken-hearted Count sank into the grave, the victim of domestic torment and of the persecutions of the French savans, instigated by his wife, the widow of the celebrated Lavoisier.’ The following account of Count Rumford’s life at Auteuil was probably also written by his friend Mr. Underwood. It was published in the ‘Gentleman’s Magazine’ in 1814: After the death of his worthy friend, the illustrious Lagrange, he saw only his next-door neighbour, the Senator Leconteux Caneleux; Mr. Underwood, a member of the Royal Institution, who assisted him in his experiments; and an old friend, Mr. Parker, a learned American, who possesses a splendid mansion in Paris and a very fine landed estate and agricultural establishment in its environs. He ceased to attend the sittings of the National Institute; but for the perpetual secretary, Cuvier, a man as morally estimable as his talents are superior to his French fellow-members, he always preserved the highest admiration and esteem.