This was by way of experiment only. The usual way of sailing a 4-ton, or, for the matter of that, a 10-ton yacht single-handed, is while going to windward to make the mainsheet fast, steer with your back, and work the jibsheet with your hands. Reaching or going free you work the mainsheet and jibsheet alternately as best you can. All the boats have large open wells, the jibsheets lead aft through a couple of blocks shackled to the clew of the sail, with the standing part fast to eyes on each plankway, and leading blocks further aft. Thus there is just sufficient purchase to enable a strong man to control the jibsheet of a 10-ton boat. In sailing these boats there is no making the jibsheet fast if you wish to get the best speed out of the vessel. They are trimmed to an inch, and every bend of the river means a careful and anxious adjustment of the jibsheet. The same remarks apply to the mainsheet, and where two or three equally capable amateurs are engaged in sailing there will be keen differences of opinion as to the proper quantity of sheet to be allowed out, and hot arguments as to the advisability of an inch more or less, when to the man accustomed to sailing in more open water the difference would appear immaterial. In tacking, the stern of the boat swings upon the pivot of the forefoot, and it frequently happens that in sailing close to the bank of the river before putting about, although the bowsprit bends the grasses, and the stem is clear of the bank, yet the counter cannons against the bank or shaves the mud. Whether it was found that advantage was taken of the keel measurement to get larger boats by means of immersed counters, or whether it was simply to give more scope to designers, is a matter of controversy; but it was ordained that half the length of the counter had to be added to the length of keel to form the factor of length, the rest of the measurement being according to the Thames rule. This rule of measurement prevailed for many years without any particular alteration in the type of boat supervening. Then, and only recently, length on the load-water-line was taken, and presently the Y.R.A. rules of measurement and rating were adopted.