A new kind of bellows which serves very well. This is most perfect for caulking in any part of the voyage without careening the ship.

a b is the manner in which the sections of the tubes join together; and these wires must be like the middling back of a knife; and they must be tempered, so that when the whole tube bends, the iron does not keep its bend. And this wire is placed between the joints of the tubes, inside the leathers that bind those tubes together, so that the force which pushes around that leather may not come to close it up, because that force is very great. And this leather that clothes the iron must be double, so that, if the outer one breaks, the inner one is not worn away. The sack n is set in that place so that, if anything should fall from above, that sack may receive it within without giving hindrance to the core inside; and once that sack n is full of material, it can be emptied from the lower side without giving any hindrance to its core. a, b are the shapes and closeness of the ends of the tubes, and how they must be secured with the iron wire. To test it, make two blowpipes of pasted paper formed on, or over, one and the same rod, equal in thickness and as long as you can. And if the rod is not long enough, join the pieces of the blowpipe to whatever length you please, and draw the blowpipe off the form by cutting it lengthwise, and then seal it again with pasted paper. But before you lengthen the blowpipe, test first with short pieces, and if it succeeds for you, then lengthen them as much as you wish and can, to experiment with the whole.