The danger commonly alleged against tandem is that the leader can turn round and face you. I never had this happen to me, but fancy it is little to be dreaded if the coachman will not loose his thong, but keep it caught up ready to administer a good dose of double thong over the horse's face as soon as he comes within reach. If worst comes to worst, however, a two-wheeled conveyance is able to turn on its own ground, and follow the horses, even if it is in the wrong direction. CHAPTER XX. THE CONVICT SHIP. In the last chapter the reader was casually introduced to a convict ship, and as it is now about half a century since they became obsolete, it may not be altogether without interest to some readers to have a short account of them from one who can say _quorum pars fui_. I will therefore venture upon a short digression, which, though it introduces a subject foreign to the one which this little book professes to treat upon, nevertheless may yet bring a coach upon the stage when least expected. Probably to the mind of some readers the very name of a convict ship will conjure up all sorts of horrors, culminating in a surprise, the capture of the ship by the convicts, and in all who resisted them being thrown overboard. Well, at any rate, no such thing occurred on board the "Layton," nor did it ever on board any vessel carrying male convicts; though I have heard that such a thing did happen once to one conveying women, which having no military guard on board, the crew intrigued with the prisoners and carried the ship into some port on the South American coast. The convicts were under the immediate charge of a naval surgeon, and, as I have already mentioned in the last chapter, he was supported by a small military guard. When first brought on board every man had irons on his legs, but upon the ship getting to sea, these were gradually knocked off as the surgeon considered could be done with safety. One-third of the guard were always on duty on the poop of the ship, with their muskets (it was in the time of old "Brown Bess," with flint locks) loaded, and placed in a rack ready to hand; and to prevent any sudden rush to attack them, a strong wooden barricade was erected just abaft the mainmast, about seven feet high, with no opening through it except a small, low door in each gangway, just large enough to admit of one person passing through in a stooping posture. With very few exceptions, the convicts gave no trouble. They had a saying among themselves that they were patriots, who left their country for their country's good; and an opportunity occurred during the voyage for some of them to do good service, which greatly improved their condition upon landing.