It was, as Faraday frequently acknowledged, his good fortune to assist Sir Humphry Davy in his experiments not only while abroad, but after their home-coming. One of the most important of all Davy's discoveries was made in the year of their return. On August 3rd he acknowledged a letter which he had received from Dr. Gray, directing his attention to the awful destruction of human life by explosions in coal mines. On October 31st, Davy announced to his correspondent that he had discovered a "safety lamp;" on November 2nd he read a paper on fire-damp before the Royal Society, and on December 14th submitted to Dr. Gray models of lamps and lanterns made on the principle of his discovery, "that fire-damp will not explode in tubes or feeders of a certain small diameter." In his experiments, in connection with this discovery, Davy received considerable help from his laboratory assistant, who must have been much gratified by that passage in Davy's paper on the "safety lamp," in which the great discoverer expressed himself as "indebted to Mr. Michael Faraday for much able assistance." This was "Mr. Michael Faraday's" first public recognition, and must have been very delightful to him, especially coming as it did from the man of all others for whom, in his scientific capacity, Michael had the most profound admiration. Davy gained, as is well known, much honour and no inconsiderable amount of money for his discovery. There are, however, circumstances in which the safety lamp is _not_ safe; Faraday, and, it is to be presumed, Davy himself, was aware of this. It is illustrative of Faraday's stern regard for truth that, although he was at the time Davy's own assistant, he did not, and would not, attest before a parliamentary committee to the universal safety of the Davy lamp. Early in 1816 we find Faraday beginning to put into practice those ideas on lectures and lecturing which he had so carefully considered before. On the point of giving his first lecture, though, he seems to doubt himself, and in a letter to Abbott occurs the following passage--"I intend making some experiments on that subject (lecturing) soon; I will defer it (his letter on lecturing) till after such experiments are made. In the meantime, as preparatory and introductory to such a course of experiments, I will ask your opinion of, and observations on, English composition--style, delivery, reading, oratory, grammar, pronunciation, perspicuity, and in general all the branches into which the _belles lettres_ divide themselves; and if by asking I procure, I shall congratulate myself on the acquisition of much useful knowledge and experience."