Swimming was practised in the Warsaw, Odessa, and Moscow districts, the horses being regularly taught with the aid of inflated bags tied under them. The Suprasl was crossed by the entire 4th Cavalry Division swimming. In order to acquire a thorough knowledge of pioneer duty, both the officers and non-commissioned officers of cavalry are attached to the engineer camp for a short course of instruction. In one division a regular pioneer squadron has been formed for telegraphic and heliographic duty. The mounted force, provided for in the Russian establishment, comprises twenty-one divisions of 3,503 sabres and 12 guns each, or an aggregate of 73,563 men and 252 field guns. A feature of the Russian cavalry equipment is the pioneer outfit, consisting of tools for construction or destruction, as they desire to repair a bridge or destroy a railroad; this outfit for each squadron is carried on a pack-mule; dynamite is carried in a cart with the ammunition train. The Cossack (except of the Caucasus) is armed with a long lance (front rank only), a sabre without guard, and a Berdan rifle. Those of the Caucasus have in addition pistol and dagger, besides a _nagaska_ or native whip. The uniform is blue, high boots, fur cap, cloak with cape. The snaffle-bit is universally used, even by the officers, although the average Russian troop-horse is noted for his hard mouth. In the mounted drill of the Cossacks there is a charge as skirmishers (or "foragers") called the "lava," which is executed at a great pace and with wild yells of "Hourra!" Lieut. Grierson, of the British army, writes that: "A big fine man mounted on a pony, with his body bent forward and looking very top-heavy, always at a gallop, and waving his enormous whip, the Cossack presents an almost ludicrous appearance to one accustomed to our stately troopers. But this feeling is dashed with regret that we possess no such soldiers." _Transport and Supply_.--The Russian system of transport is in a very experimental and unsatisfactory state. It is the only army which provides regimentally for the _personnel_ and _materiel_ of this department. In each regiment is a non-combatant company, in which all men required for duty without arms are mustered.