Even in the simple operation of sailing when at sea, I have often observ'd different judgments in the officers who commanded the successive watches, the wind being the same. One would have the sails trimm'd sharper or flatter than another, so that they seem'd to have no certain rule to govern by. Yet I think a set of experiments might be instituted, first, to determine the most proper form of the hull for swift sailing; next, the best dimensions and properest place for the masts: then the form and quantity of sails, and their position, as the wind may be; and, lastly, the disposition of the lading. This is an age of experiments, and I think a set accurately made and combin'd would be of great use. I am persuaded, therefore, that ere long some ingenious philosopher will undertake it, to whom I wish success.