When my letter of last June was written I thought your father pretty much fixed at Munich, and therefore ventured to suggest to you that it might contribute to your happiness if you were to be established at that Court. But I learn since that the Elector has set him more at his liberty, and that in consequence he intends to return to England this autumn. Political difficulties may possibly stand in the way of this journey, but he hopes to avoid them. I am still as much at a loss as I was in June to answer your question whether your father be going to marry. He is now, as I told you in that letter, making the tour of Switzerland with a very amiable French lady. But I have no reason to think that they have any idea of matrimonial connexion. When the Count comes to England she is to return to Paris; at least so he writes me word. He wrote to Sir Joseph Banks: Count Rumford has sent me a letter from Mannheim, dated the 13th of September. He had applied for leave to pass through France to England, but was refused. I suppose the French Government thought that he too would act the spy.[10] He professes himself still uncertain whether he should not attempt the journey by the north of Germany, but I am myself pretty well satisfied that he will not. In the meantime he desires me to assure you that he will certainly contrive to send the paper on Heat before Christmas. The King and Queen of Sweden were then at Mannheim. He had been presented to and had dined with them. Later he wrote: Soho Square, September 29. My last letter from Count Rumford was of July 31, but I have learned otherwise that he was at Geneva about the 20th of August, setting out for a tour to the icy mountains of Savoy. He has permission, therefore, to travel in that part of the French territory. Whether he will be allowed to return to England through France, or whether he will come at all, I do not yet know. Whilst in Switzerland Rumford wrote ‘Some Observations on the Glaciers of Chamouni, and on the Propagation of Heat in Liquids.’ This paper was sent to the Royal Society, of which he was then vice-president, December 15. It was published in the ‘Philosophical Transactions’ for 1804. On December 5, 1803, Sir C. Blagden again wrote to Rumford’s daughter: