and their course ought, moreover, to be performed not in a right line, that ends elsewhere, but in a circle, of which the two points, by a short wheel, meet and terminate in ourselves.
eta, bestalde, haien lasterra zuzendu behar da, ez kanpora xederatzen den marra zuzenean, baina biribilka, bi buruak baitaude eta amaitzen baitira gure baitan itzulera labur baten bidez.