Some years ago the late Ronald Balfour wrote a paper on the Study of History at Cambridge. His main preoccupation was the nature of history as a study. To-day interest is focused on more practical matters of detail, and we wish to know why the Cambridge Historical Tripos developed as it did, what was the purpose behind the various reforms, how far the character of the Tripos was affected by the example of foreign Universities, by experience at Oxford or by the requirements of the Civil Service examinations, and, finally, who most influenced the Tripos, the professors or the more junior College lecturers and supervisors.