Mr. Nesbit, of Upper Thames-street, had a patent in 1823 for the fabrication of a coarse kind of paper, especially applicable to the sheath ing of ships, in the manner that the tarred brown paper is usually applied. The material is a peculiarly soft kind of mo3s, which grows abandantly in the ditches and low grounds of Holland. In that country, and in several of the northern states of Germany, paper made from this material is employed as a covering to the bottoms of ships, between the wood and copper sheathing, and is found to be peculiarly serviceable in preventing leaks; owing to its absorbent quality it swells up, making a close and firm packing under the copper. The manufacture of paper from this substance is exceedingly simple. The moss is first to have the adhering earth washed from it, then to be chopped in short pieces (about half an inch long) in a similar machine to a tobacco cutting-mill; after this it is to be soaked for several hours in water, then formed into sheets in the ordinary way between moulds, placing each sheet between woollen cloths; in this state they are to be subjected to mechanical pressure, afterwards thoroughly dried, and lastly, pressed again between sheets of brown paper, (placed alternately,) when the manufacture is completed.