Informal American Proposal for a Conference on the Limitation of Armament, July 8, 1921—Acceptance of the British Proposal to Extend the Discussions to Pacific and Far Eastern Questions—Refusal of a British Suggestion for a Preliminary Conference—Discussions of Agenda—American Invitation to Great Britain, France, Italy, and Japan, August 11—Invitation to China on August 11, and to Belgium, Portugal, and the Netherlands on October 4, to Participate in the Discussion of Pacific and Far Eastern Questions