The steps to remedy this impediment--to make, as it were, the flag-language more civilised, so that it might express refinements of thought in one direction and little every-day wants in another, to increase, that is, its scope of expression from that of a child to that of a grown man--were first taken by Sir Home Popham. It may be that in this matter, as in so many other inventions, the first to make some practical use of an idea got that idea at second hand[388]. However this may be in Popham's case, it is clear that the labour of perfecting the invention and what is perhaps equally important, of persuading others that it was really worth a trial, was undertaken by Popham alone. For twelve years the books which he produced were privately printed by him, and from the free-handed way in which he gave them to his brother officers when urging them to try this code, it is probable that he carried out his propaganda at some pecuniary expense to himself. The idea that dominated it was to provide parts of speech and let the users make their own sentences whenever those in the signal book did not suffice. It was the step from a "Traveller's Manual of Conversation" to a dictionary of the language. Popham tells us that his _Telegraphic Signals, or Marine Vocabulary_ ("telegraphic" being, of course, used thirty years before the invention of the electric telegraph, in its primary sense of writing at a distance) was originally compiled in 1800, to facilitate the conveyance of messages from Popham's ship, the 'Romney,' off Copenhagen, to Admiral Dickson, off Elsinore, when that officer, with a squadron of ships, was giving additional weight to the British Ministers' arguments with the Danish Court. "Its utility was in that instance so obvious and so generally allowed by the Captains of the North Sea Squadron that Sir Home Popham conceived it might be brought into more extensive practice."