'Trafiquing' in wool and woollen goods was the most important trade, and though its zenith was passed in the seventeenth century, it continued to do well till the later half of the eighteenth. Defoe speaks of the 'serge manufacture of Devonshire' as 'a trade too great to be described in miniature,' and says he is told that at the weekly market 'sixty to seventy to eighty, and sometimes a hundred, thousand pounds' value in serges is sometimes sold.' Probably the account given him was a little exaggerated, but Lysons quotes the statement that in the most prosperous days L50,000 or L60,000 worth of woollen goods had been sold in a week. Many were the petitions sent up to Parliament in the reign of William and Mary, begging protection for the local wool-trade, and that competition from unhappy Ireland might be discouraged. The great hall of the New Inn was used as an exchange, and here were held yearly three great cloth-fairs, where merchants from London and from all parts gathered, and stalls and shops in the inn were let to 'foreigners.' The Tuckers' Hall, built of ruddy stone, still stands in Fore Street, and the hall has a fine cradle roof with plaster panels. The most powerful of all the companies was incorporated later than many of the guilds, for the Merchant Adventurers received their charter from Queen Elizabeth. Their power and wealth was very considerable; they cast their lines in all directions, and they secured a monopoly of trading with France. This company supplied with money, and had a stake in, some of Sir Humphrey Gilbert's and Captain Davis's enterprises, and Sir Francis Drake himself invited the 'gentilmen merchauntes' and others of the city to 'adventure with him in a voiage supportinge some speciall service ... for the defence of 'religion, Quene and countrye.'' About Charles I's reign the importance of the company gradually declined, and the society was eventually dissolved.