“I am quite aware that the main point at issue between these two distinguished naval architects has been more closely confined to the question of stability than to that of flotation as displayed in the design of the _Collingwood_, and in this scientific view of the case I do not feel competent to offer any opinion, except to point out that the cellular-deck principle _per se_ does not involve any such danger as regards stability as is produced by the top weight of a central citadel. Mr. White acknowledges that this top weight will capsize his ship if deprived of the buoyancy afforded by the unarmored ends, and on this danger point Sir Edward Reed fixes his sharpest weapon of attack. * * * * * “The great issue at stake is how the weights available for the protection of buoyancy and for gun defence are to be distributed to the best advantage for defensive purposes, and in order to discuss Sir Edward Reed’s opinions in a concise form I will deal with the question solely as concerning the use of side-armor of less than twelve inches, beyond which limit of thickness I will, for the sake of argument, admit its practical advantages; and looking to the demand for increased speed and coal-carrying capacity, it does not appear probable that if combined with adequate gun protection, and if of sufficient depth, an all-round belt of thicker than ten inches can be carried by any vessels of war except those of much greater displacement than the _Collingwood_ class. I feel justified, however, in discussing the question on this basis, because Sir Edward Reed includes in his category of approved armored ships our recent belted cruisers, having a narrow belt of ten inches maximum thickness, and takes credit for having induced the Admiralty to abandon their original intention of cellular-deck water-line protection in this class of war-ship in favor of this thin armor-belt. “The relative value of these two systems of water-line protection, namely, an all-round belt _versus_ a raft body, must not only be ruled by the displacement decided upon for each class of vessel, and by the power of the gun which has to be encountered, but by such tactical expedients as can be resorted to in battle, as being those best suited to the known offensive and defensive properties of the combatants.