HOLYHEAD, a town and cape of the isle of Anglesea in Wales, and in the Irish channel, where people usually embark for Dublin, there being three packet-boats that sail for that city every Monday, Wednesday, and Friday, wind and weather permitting. It has a very convenient harbour for the northern trade, when taken short by contrary winds. If this was properly repaired, and warehouses built, it would be very convenient for the Irish, to import such of their goods as pay English duty, it being but a few hours sail from Dublin. Besides, the Dublin merchants might come over with the packets, to see their goods landed. The commodities are, butter, cheese, bacon, wild-fowl, lobsters, crabs, oysters, razor-fish, shrimps, herrings, cod-fish, whiting, whiting-pollacks, cole-fish, sea-turkeys, turbots, soles, flounders, rays, and plenty of other fish. On the rocks the herb grows of which they make kelp, a fixed salt used in making glass, and in alum works. In the neighbourhood there is a large vein of white fuller earth, and another of yellow which might be useful to fullers. On the isle of Skerries, nine miles to the north, is a light-house, which may be seen 24 miles off. Large flocks of puffins are often seen here; they all come in one night, and depart in the same manner. W. Long. 4. 40. N. Lat. 53. 20.