The accompanying illustration shows the well-known manœuvre of boxhauling, which Hutchinson was most anxious to teach his brother seamen. For the benefit of the non-nautical reader, I may explain that this is a method of veering a ship when the sea is so bad that she cannot tack, and is dangerously near the lee shore. Boxhauling, insisted Hutchinson, is the surest and best method of getting a ship under command of helm and sails in a limited space. “There is a saying amongst seamen,” he adds, “if a ship will not stay you must ware her; and if she will not ware, you must box-haul her; and if you cannot box-haul her, you must club-haul her--that is, let go the anchor to get her about on the other tacks.” Every maritime officer to-day has written across his mind in imperishable letters the five L’s--“log, lead, look-out, latitude, and longitude.” In Hutchinson’s day the sailor had only three of these, and he quotes the great Halley as emphasising the importance of the three L’s--lead, latitude, and look-out. For the difficulty of the longitude was still unsolved. [Illustration: BOXHAULING. Hutchinson relates that on one occasion he saved his ship from foundering in Mount’s Bay only by boxhauling, as here indicated. Fig. 2 shows that as soon as the ship ceased coming round in stays, the foresheet was hauled aft, the headsails trimmed flat, whilst the sails were slacking, and the helm put hard alee. She then made a stern board. Thus gathering way, she turned short on her heel till she filled main and maintopsails the right way. The helm was then put hard aweather, so that the ship got headway with the sails trimmed, as in Fig. 1. Later on she was able to turn to windward, as in Fig. 3, far enough off the lee shore so as to weather the Lizard.] [Illustration: EIGHTEENTH-CENTURY “BITTACLE.” There was a compass on either side, and the lamp was placed in between.]