Mr. Specter. Would you pass that to me, sir, so that I may mark that as a Commission Exhibit, and then I will ask you to identify it, please?
Mr. Chief Justice, may I mark as Commission Exhibit No. 400 a document?
The Chairman. It may be marked.
(The document was marked Commission Exhibit No. 400 for identification.)
Mr. Specter. I will ask Doctor Finck to describe it for us, please.
Colonel Finck. This is a scheme which I prepared before the 22d of November. It is a teaching scheme, but it applies to the case in discussion. It will be of help in understanding how I could identify the entrance and the exit by examination of bone. "A" represents the bony portion of the skull. "B" represents the cavity of the head, the cranial cavity. "C" represents the entrance and "D" represents the exit. The arrows indicate the missile path.
This scheme is based upon observation of through and through wounds of bone, and the same differences apply to a pane of glass. The surface struck first by the missile in relation to the surface struck next by the missile, this one, shows a smaller diameter, which means that if you look at the route of entrance in this case here, C, from the outside you will not see a crater. If you examine it from the inside, you will see a crater corresponding to the bevelling, coning, shelving, previously described by Commander Humes.
In the case we are discussing today, it was possible to have enough curvature and enough portion of the crater to identify positively the wound of entrance at the site of the bone.
Mr. Specter. Relating then your evaluation of the situation with respect to President Kennedy, and turning to Commission Exhibit No. 388, what is your opinion as to whether point A is a wound of entrance or exit?
Colonel Finck. My opinion as regards Exhibit 388, letter A, is that this wound is the wound of entrance.