But an entirely false impression has been conveyed should it be understood that the only advance made in yacht designing was due to more or less ingenious methods of evading the existing measurement rule; and it will be sufficient if the fact has been impressed, that a designer is as unlikely to make a successful vessel if he ignores the measurement under which the yacht is to race as by failing to recognise those laws of nature which govern the stability of bodies in water and their resistance in passing through it. What has to be done by the yacht designer, besides getting the very utmost out of the tonnage rule, has never been more happily put than by Lord Dunraven in an article on International Yachting, from which I venture to quote:-- How most successfully to drive a body through the water by the means of the motive power of the wind acting upon the sails, is the question that puzzles men and turns them grey-headed before Nature should have thinned or whitened their locks. The designer has not merely to discover the form of solid body which, at various rates of speed, will excite the smallest degree of resistance in passing through the water, for the body is not solid, it is hollow. It must have buoyancy, and suitable accommodation for all the living and dead freight on board. It must possess stability, real and acquired; that is, natural by means of breadth, and artificial by means of ballast, if the expressions are allowable. It does not proceed on a level keel or at any uniform angle, but at angles varying at every moment, and the contour of the body must be adapted to these various angles. Neither does the wind exert its force upon it from a fixed direction, nor propel it through water uniformly smooth or constantly rough. On the contrary, the propelling power strikes from various angles on the surface of the sails; and the sea, as we all know--and some of us to our cost--has a reprehensible habit of becoming, on the shortest notice, agitated in the most disagreeable manner.