The principles that guided the founders of the United States. John Guild opened the meeting with apologies that the agendum circulated in advance was by then out of CIE 1931 system for colorimetry are examined. The principles are applied to the Wright-Guild experimental de-date. He noted, however, that CIE rules then in effect allowed countries four months after the vote for national con-terminations of the color mixture data to show in detail how and why each step in the development of the CIE sideration. Then he presented five revised resolutions to the Committee. Those five resolutions would prove in retrospect 1931 system for colorimetry came about. These steps are examined in the light of 65 years advanced knowledge of to be the most important single event ever to occur in colorimetry, because they would set the colorist's agenda for colorimetry. The necessity for each of these principles in the modern world is examined critically to determine the next 65 years, and into the foreseeable future. In fact, resolutions of any sort could have been adopted only if the whether one might hold to the same principles if the system were being freshly formulated today. ᭧ 1997 John Wi- two English-speaking nations could come to agreement upon them. This was because in the period after the First