The manufacture of yarn being at length full established, the demand for it became too great for the patentees to supply, and then they sold licenses very extensively, so that at least 60,000 l. has been expended in consequence of such grants. Mr. Arkwright and his partners have expended upwards of 30,000/. in buildings and machinery in Derbyshire, and above 4,000 /. in Manchester; and they have lost not less than 5,000 l. or 6.000 l. by injuries from mobs, and from fire. The saving of labour by this machinery is several hundred thousands per annum, and yet trade is so greatly increased, that many more people are employed, and can earn a comfortable maintenance, than were employed before. The same inventions maybe applied with equal advantage to prepare and spin wool.