Meanwhile, I was spending my days poring over the maps and charts of Kinchau and its neighbourhood with which I had been supplied, leaving Commander Tsuchiya to carry on the work of constructing the long boom, and merely visiting it in a picket boat at the close of each day, to see how the work was progressing. My study of the maps and charts had reference to a scheme which had come into my head whereby it might be possible to determine the ranges of the several Russian positions from certain fixed points in the bay with the utmost accuracy, thereby greatly increasing the effectiveness of the naval fire when our flotilla should be called into action. The map in particular which had been issued to me was drawn upon a scale so large that even comparatively insignificant distances could be closely measured upon it, and it was so full of detail that apparently every building, however unimportant, was marked upon it; also it was "contoured"--that is to say, it was covered all over with wavy lines, each of which represented a definite height above sea-level. With such a map before me it was of course the easiest matter imaginable to determine the position of all the most salient points of the landscape, of which there were several, and--assuming the map to be correctly drawn--to measure the distances of these from one another. With such a bountiful fund of at least approximately accurate information for a starting-point it was a simple matter for me to fix upon a number of points in the bay--as many as I chose, in fact--which could be clearly indicated by buoys bearing different coloured flags, the positions of which could be accurately determined by cross bearings; and my plan was, first to lay down these buoys and determine their positions, and then mark them on maps, a copy of which would be handed to each captain, from which, by the employment of a scale and a pair of dividers, he could immediately measure off with precision the exact range of any object desired. Having at length arranged my scheme on the map to my liking, I proceeded with it aboard the _Mikasa_, and submitted it to the Admiral, who, with Captain Ijichi, the Commander, and several of the officers of the ship, examined it with the utmost interest, asking me several questions in connection with it. When I had fully explained the scheme, they all agreed that it was an admirable idea, and would undoubtedly be of the utmost value--_if_ it could only be carried out. Togo was of opinion that it could not; I, on the contrary, was convinced that it could; and at length I managed to get the Admiral's somewhat reluctant consent to make the experiment.