In all these instances the action of the wind has been entirely omitted from consideration, but it must not be forgotten that a strong breeze materially complicates the problem before the canoist. This is especially so when the wind is aft; when it is ahead you are not likely to forget its presence. A strong fair wind (that has scarcely been felt with your back to it) and the swift stream and the boat's speed from paddling being all in one direction, the breeze will suddenly become a new element in the case when you try to cross above a rock as in fig. 1, and find the wind carries you broadside on against all your calculations. Nor have I any observations to make as to sailing among rocks in a current. The canoe must be directed solely by the paddle in a long rapid, and in the other places the course to be steered by a boat sailing is the same as if it were being merely paddled, though the action of the wind has to be carefully taken into consideration. In all these things boldness and skill come only after lessons of experience, and the canoist will find himself ready and able, at the end of his voyage, to sail down a rapid which he would have approached timidly, even with the paddle, at the beginning. But perhaps enough has been said for the experienced oarsman, while surely more than enough has been said to shew the tyro aspirant what varied work he has to do, and how interesting are the circumstances that will occupy his attention on a delightful river tour. NOTE ON THE "KENT."--The narrative of a shipwreck referred to at page 219 has been published 40 years ago, and in many foreign languages, but its circulation is very large at the present time. The following letter about one of the incidents related in the little book, appeared in the "Times" of March 22, 1866:-- "LETTERS FROM THE DEEP. "_To the Editor of the 'Times.'_ "Sir,--As attention has been drawn to the letters written on board the ship London, and washed ashore, it may be interesting to notice the following remarkable incident respecting a letter from another ship wrecked in the Bay of Biscay. In March, 1825, the Kent, East Indiaman, took fire in the Bay of Biscay during a storm while 641 persons were on board, most of them soldiers of the 31st Regiment. When all hope was gone, and before a little vessel was seen which ultimately saved more than 500 people from the Kent, Major ---- wrote a few lines and enclosed the paper in a bottle, which was left in the cabin. Nineteen months after this the writer of the paper arrived in the island of Barbadoes, in command of another Regiment, and he was amazed to find that the bottle (cast into the sea by the explosion that destroyed the Kent) had been washed ashore on that very island. The paper, with its faint pencil lines expressing Christian faith, is still preserved; and this account of it can be authenticated by those who were saved.