Dr. GREGORY. Yes; this film was made on November 22, 1963, as indicated by a pencil marking on that film, and it further bears the assigned X-ray number of 219-992, which was that of the patient, Governor John Connally. Mr. SPECTER. May it please the Commission we shall reserve number 690 and 691 for later identification of those photographs and X-rays. Senator COOPER. So ordered. Dr. GREGORY. If you will notice in addition to the apparent fracture of this, the radial bone here. Mr. SPECTER. Are you now describing a second X-ray? Dr. GREGORY. No; these are two taken at right angle of the Governor's wrist prior to attention. These are diagnostic film, one made with the hand palm down and one with the hand turned 90°. Mr. SPECTER. Do they bear identical numbers then? Dr. GREGORY. They do. Mr. SPECTER. Is there any mark on them at the present time which distinguishes them by way of marking or number? Dr. GREGORY. Other than the pencil markings on each of these two films and my own which I attached last evening for convenience. Mr. SPECTER. Can you mark one of them as "A" and one as "B," so that when you describe them here we will know which you are referring to? Dr. GREGORY. Very well. Let the record show that "A" stands for the anteroposterior view, Exhibit No. 691, and "B" stands for the lateral view, Exhibit No. 690, of the right wrist and forearm. "A" then demonstrates a comminuted fracture of the wrist with three fragments. Mr. SPECTER. What do you mean by comminuted? Dr. GREGORY. Comminuted refers to shattering, to break into more than two pieces, specifically many pieces, and if I may, I can point out there is a fragment here, a fragment here, a fragment here, a fragment here, and there are several smaller fragments lying in the center of these three larger ones. Mr. SPECTER. How many fragments are there in total, sir, in your opinion? Dr. GREGORY. I would judge from this view that counting each isolated fragment there are fully seven or eight, and experience has taught that when these things are dismantled directly under direct vision that there very obviously may be more than that. Mr. SPECTER. Will you continue to describe what that X-ray shows with respect to metallic fragments, if any? Dr. GREGORY. Three shadows are identified as representing metallic fragments. There are other light shadows in this film which are identified or interpreted as being artifacts. Mr. SPECTER. What is the basis of distinction between that which is an artifact and that which is a real shadow of the metallic substance? Dr. GREGORY. A real shadow of metallic substance persist and be seen in other views, other X-ray copies, whereas artifacts which are produced by irregularities either in the film or film carrier will vary from one X-ray to another. Mr. SPECTER. Is it your view that these other X-ray films led you to believe that those are, in fact, metallic substances?