The reports which reached America in the winter of 1764, respecting the intentions of the ministry to raise a revenue from the colonies, were verified in the following spring. The substance of Grenville's resolutions (with the exception of that respecting stamps, which was laid aside for the present) became a law April 6, 1764. Bancroft has summarized this act as "a bill modifying and perpetuating the act of 1733, with some changes to the disadvantage of the colonies; an extension of the navigation acts, making England the storehouse of Asiatic as well as of European supplies; a diminution of drawbacks on foreign articles exported to America; imposts in America, especially on wines; a revenue duty instead of a prohibitory duty on foreign molasses; an increased duty on sugar; various regulations to restrain English manufactures, as well as to enforce more diligently acts of trade; a prohibition of all trade between America and St. Pierre and Miquelon."[54] Organized opposition to the ministerial measures began in Boston, and perhaps, at that time, could have begun nowhere else. For not only were the interests of that town, in the fisheries, trade, and navigation, the most considerable in the colonies, but there, as nowhere else in the same degree, for more than a century, had been operative causes of dissatisfaction connected with the navigation acts, the exercise of the royal prerogatives, and ecclesiastical affairs; and in no other section had Otis's declaration of the general principles of liberty found such ready acceptance. The Grenville Act of April, 1764, was to take effect September 30. News of its passage had scarcely arrived in Boston before the citizens in town meeting, May 24, voted instructions[55] to their representatives in the General Court, which had been presented by Samuel Adams. They were directed to endeavor to prevent proceedings designed to curtail their trade, and to impose new taxes,—"for if their trade might be taxed, why not their lands?"—and to obtain from the General Assembly all needed advice and instruction, so that their agent in London might effectually "demonstrate for them all those rights and privileges which justly belonged to them either by charter or birth." Since the other colonies were equally interested, their representatives were also to endeavor to obtain coöperation in that direction.