There was also another matter to be settled with our neighbours. During a period of sixty-six years, namely, from 1713 to 1779, the postage on a single letter between London and Paris had been 10d.; and, to avoid the keeping of accounts, this sum had been collected and retained by the Post Office of the country in which the letter was delivered. In 1779, when owing to the war communication between Dover and Calais was stopped, letters from Paris reached England through Flanders, and on these letters when put into the post in Paris a charge of 4d. was made in addition to the 10d. to be paid on delivery in London. It had been thought that in 1783, on the termination of the war, this charge would be abandoned, and that the old postage of 10d. would be resumed. Such, however, was not the case. The Post Office authorities in France adhered to the 4d. charge and defended it. The old postage of 10d., they argued, was all very well when they had no packets of their own and England performed the sea service. But now France had her own packets, and the distance between Paris and Calais being far greater than between London and Dover, it could not in reason be expected that on a letter between the two capitals she would be content with no higher postage than that which England received. The charge of 4d. upon letters for London when put into the post in Paris must be maintained, even though they no longer went through Flanders. It was a matter of internal regulation with which England had no concern. Without contesting this view of the case, the home authorities regarded the 4d. charge as a most vexatious impost. Not only had it the effect of diminishing the correspondence, but many of the letters which still passed were carried by private hand from Paris to Dover and there posted, so that the British Post Office received upon them only 4d. apiece, this being the postage from Dover to London, instead of 10d., the postage from Paris. In 1787 Palmer had, by Pitt's direction, gone over to France in order to adjust the matter and to promote a six days' post between the two countries; but he returned without effecting either object.