Again, in September, writing to his daughter, Rumford says that the new Elector has invited him to return with assurances of his warm friendship, and ‘that though many salaries and pensions have been suspended through the war, his shall be paid.’ He says he is going to Munich, ‘but that if the Elector will excuse him he does not intend to stay long, the Royal Institution still requiring his oversight.’

He reached Munich by way of Mannheim, and thence wrote to his daughter:

Munich, October 2, 1801.

My dear Sally,—I arrived here late last evening, and early this morning went to pay my respects to the Elector, who received me with all imaginable kindness. He appears to have plenty of business for me in an academy he is about building, but, as things are not yet in readiness to begin, I am excused from remaining; instead of which I return to England, to put an end to the work begun there—that of the Royal Institution. I owe so much to the Elector, it is my duty to do all in my power to give him satisfaction. Besides, he says I shall be president of the academy when done.

In another letter he speaks of the kindness he met with in Bavaria.

He left Munich on October 13, and again wrote to his daughter on his arrival in Paris on the 25th. His daughter says this was her father’s first visit to Paris. The reception he met with was ‘simply enchantment.’ His inventions were in common use; his name was familiar to everyone. He made a multitude of acquaintances; parties were made for him every day; and he particularly liked one lady. Two letters written to Sir Joseph Banks from Paris in 1801 are of great interest.

Hôtel de Caraman, Paris, November 11.

My dear Sir Joseph,—I arrived here from Munich about a fortnight ago, and I purpose staying here three weeks longer. My reception has been very flattering, and I find many interesting objects of curiosity that engage my attention. I have already made the personal acquaintance of most of the men of eminence in science, and I have attended several of the meetings of the National Institute. At the last meeting of the mathematical and physical class the First Consul came in, and, fortunately for the complete gratification of my curiosity, he happened to come and seat himself very near me. One person only (Lagrange) was between us. He stayed about an hour—till the meeting was over. Volta read a memoir on Galvanism and explained his theory of the action of the voltaic pile or battery. His opinion is that all the appearances that are called galvanic are owing to the action of an electric fluid, and he says that the simple tact of two metals—silver and zinc, for instance—is sufficient to set the electric fluid in motion; and if the metals are insulated, one of them will become electrified positively and the other negatively. This assertion was proved by an experiment which was made before the assembly, and this fact is the foundation on which his explanation of the phenomena of the galvanic pile is established. After Volta had finished his memoir the First Consul demanded leave from the President to speak, which, being granted, he proposed to the meeting to reward M. Volta with a gold medal, and to appoint a committee to confer with M. Volta on the subject of his experiments and investigations respecting galvanism, and to make such new experiments as may bid fair to lead to further discoveries. He delivered his sentiments with great perspicuity and displayed a degree of eloquence which surprised me. He is certainly a very extraordinary man and is possessed of uncommon abilities. The expression of his countenance is strong, and it is easy to perceive by his looks that he can pronounce the magic words ‘je le veux’ with due energy. I was presented to him by the Bavarian minister at his last public audience, and was received by him with marked attention. He gave me to understand that he knew me by reputation very well, and intimated that the French nation had adopted several of the improvements I had recommended. A few minutes after I came home from the audience I received a note from him, inviting me to come and dine with him that day. The foreign ministers dined with him, but no other stranger except myself was invited; consequently my being invited was considered as a marked distinction. It was the next day that I saw him again at the National Institute.

I have had opportunities of making the acquaintance of several of the most distinguished characters now in power in this country. I am very intimate with Chaptal, the Minister of the Interior, and frequently see Talleyrand, the Minister for Foreign Affairs. I have dined with both of them, and visit them often. Laplace and Bertholet are very civil and attentive to me, and have each of them given me a dinner, where I met most of the men of science of the first distinction in Paris. Fourcroy has also given me a dinner. In short, I am treated with the utmost civility, and I spend my time very agreeably and very usefully. I hope to see you in London about the 6th or 8th of December.

Ever yours most faithfully,
Rumford.

He again wrote:

November 22, 1801.

My dear Sir Joseph,—I do wrong perhaps, but I cannot help telling you that your name is at the head of the list of those ten persons whom the Class of Mathematics and Physics have resolved to present to the National Institute at their next general meeting, in order to their being elected foreign members of the Institute. You were proposed to the class by the Section of Botany. Your name is followed by those of Maskelyne, Cavendish, Herschel, Priestly, Pallas, Volta, and three others. I was present when the ballot of the class was taken, and had the satisfaction to see that all the votes agreed in placing your name at the head of the list. I was politely told that my name would have been near that of my friend, had it not been that the second class of the Institute had claimed me as belonging to them and had placed me on their list. The three first names on that list are, I am told, Mr. Jefferson, President of the United States, Count Rumford, and Major Rennell; the others I did not learn.

I was proposed to the class by the Section of Political Economy. The classes propose to the Institute, and the Institute elects at a general meeting. The number of foreign members is limited to twenty-four. As the election will not take place for some weeks to come, I beg you would make the most prudent use of the information I have given you. I shall not mention the subject to anybody but yourself.

I hope to see you in London in about three weeks from this time.

My health is much improved, and is still improving every day. My stay in Paris has afforded me much amusement, but I begin to be impatient to see my friends in England. I hope everything is going on well at the Royal Institution.

I am, my dear Sir Joseph, with unalterable esteem and attachment, yours most faithfully,

Rumford.

In another letter to his daughter, written January 15, 1802, he says that he returned to Brompton on December 20, and that he was three months on the Continent and seven weeks of the time in Paris. He spoke of his intention to enjoy again the delights of the French capital on his way, in the course of the summer, to Munich and to get excused from any longer residence at Munich. The Elector continued friendly to him, and had lately written to him a very gracious letter, in which he expresses his pleasure at the cordiality extended towards Rumford in France, and advises him to cultivate an acquaintance with a certain lady there, who, among other attractions, was said to have great wealth. When he made this second visit to Paris, the Count accepted an invitation which he had received to stay with the Bavarian ambassador.

Before he left England again, May 9, 1802, he published the third volume of his essays.