The letters I shall introduce appear to me highly interesting; and by the warmth of feeling with which they repel the bare suspicion of his prostituting science to the acquisition of wealth, to develope a feature in his character too important to be omitted in a memoir of his life. From the following letter, it would appear that Davy's alarms, with respect to his responsibilities, were first awakened by a sight of the labels, in which his name was introduced.[2] [2] I am here bound to state, from a careful examination of all the original documents, that his name was introduced in the very words which he suggested, and which I have at this moment before me in his own handwriting:--so differently, however, does the same sentence strike the eye in print and in manuscript, that an author frequently does not recognise his own composition. TO JOHN GEORGE CHILDREN, ESQ. MY DEAR CHILDREN, Rokeby, July -- 1813. I am very sorry you did not come to Cobham, as the party was very pleasant. Your apparatus was magnificent, worthy an Imperial Institute: there were some swine however for the pearls; at least, there was one,--you cannot suppose I mean any other than----. I have been much disturbed and vexed by enquiries respecting the price of _my_ gunpowder, which from the labels I find is supposed to be _sold_ by me. These labels must be altered, so as to put in a clear point my relations to the manufacture; and it must be understood by the public that I have given my gratuitous assistance and advice only. I have written to Mr. Burton by post, giving two forms. I shall do you more good if these are adopted than I can now; and I wish them to be adopted speedily, as it may otherwise get abroad that I have nothing to do with the powder, and that my name is used in a manner which does not meet my approbation. In the labels in the windows, it should not be _under my directions_, for this implies that I am a superintendent in the manufactory; but it should be--"RAMHURST GUNPOWDER, manufactured by Messrs. B. C. and Co. In the composition of this powder, the proprietors have been assisted by the advice and assistance of Sir H. Davy." A fair statement will do the manufacture good. Misapprehension will do it much harm. I am now at Rokeby; we shall be in a few days at Braham Castle, Lord Mackenzie's, near Dingwall, where we shall stay for a week. After that we shall go to the Marquis of Stafford's, Dunrobin, near Goldspie. I am, my dear Children, Very truly and affectionately yours, H. DAVY. TO THE SAME. MY DEAR CHILDREN, Edinburgh, July 22.