Humble proposalls to the honorable the Councell for Trade, and all merchants and others who desire to improve their estates : shewing what particulars if enacted by Parliament would ... conduce to advance trade, imploy the poore, diminish interest, improve publique revenues, and prevent the cruelty of creditors and the injustice of debtors, tending ... to promote the enterprise discovered in a late treatise entituled The key of wealth, and in an abstract thereof, called The trades-man's jewel.