His first course consisted of five lectures on the ‘New Branch of Philosophy’--the galvanic phenomena. His first lecture was on Tuesday evening, April 25. He began with the history of galvanism, detailed the successive discoveries, and described the different methods of accumulating galvanic influence. Polished plates of different metals and the effect of their lying together in contact with water and air were exhibited. ‘Air is absolutely necessary to the oxydating process.’ He observed that ‘it was difficult to prove that hydrogen was given out in the decomposition of water in this way, and that it seemed rather probable that alkali was formed.’ He showed the effects of galvanism on the legs of frogs, and exhibited some interesting experiments on the galvanic effects on the solution of metals in acids. As a recent discovery of his own he showed that with one kind of metal only, more powerful effects may be produced than with two, as heretofore employed; but in this case there must be more than one liquid interposed between the plates. He stated that copper, for example, and discs of cloth or pasteboard, moistened with diluted nitrous acid and solutions of muriat of soda and sulphuret of potash, and arranged in the order named (viz. copper, nitrous acid, muriat of soda, sulphuret of potash, &c.), give much more sensible shocks than the pile as at first constructed. The reporter added: ‘Sir Joseph Banks, Count Rumford, and other distinguished philosophers were present. The audience was highly gratified, and testified their satisfaction by general applause. Mr. Davy, who appears to be very young, acquitted himself admirably well; from the sparkling intelligence of his eye, his animated manner, and the _tout ensemble_ we have no doubt of his attaining a distinguished eminence.’ The second lecture was given on the 28th, and the others were to be delivered on the Tuesday and Saturday evenings till completed. He gave another short course on Pneumatic Chemistry. ‘The lectures were extremely ingenious and excited considerable attention.’ The concluding lecture was on June 20, on Respiration, and after the lecture an opportunity was given to such as wished it to breathe some of the nitrous oxide. The reporter said, ‘Mr. Grosvenor Bedford, Mr. Stodart, and Mr. Underwood breathed the gas, and the effects it produced, and especially on the last, were truly wonderful. Mr. Underwood experienced so much pleasure from breathing it that he lost all sense of everything else, and the breathing bag could only be taken from him at last by force.’ ‘The irresistible tendency to muscular action produced by this gas was such as cannot be described. It must be witnessed to be conceived.’ ‘Professor Pictet, of Geneva, who is now on a visit in this country, Count Rumford, and other philosophers of eminence were present, and seemed not a little gratified with the exhibition of the gas.’[33]