sentences:  The Prime Minister was content with the prospect of losing die-hard Free Traders, and prepared a memorandum which contained a number of radical, reforming economic opinions.On 9 September, Chamberlain dramatically sent a letter of resignation to Balfour, explaining his wish to campaign publicly for Imperial Preference outside the Cabinet.An hour before the Cabinet meeting on 14 September, Chamberlain and Balfour agreed that Chamberlain would resign and attempt to rally public support for Imperial Preference if the Cabinet could not be persuaded to adopt the new policy.