http://mcadams.posc.mu.edu/russ/testimony/humes.htmCommander HUMES - No, sir; I am speaking here of the wound in the occiput. The wound on the inner table, however, was larger
and had what in the field of wound ballistics is described as a shelving or a coning effect. To make an analogy to which the members of the Commission are probably most familiar, when a missile strikes a pane of glass, a typical example, a B-B fired by a child's air rifle, when this strikes a pane of glass there will be a small, usually round to oval defect on the side of the glass from whence the missile came and a boiled-out or coned-out surface on the opposite side of the glass from whence the missile came.
(At this point, Mr. Dulles entered the hearing room.)
Commander HUMES - Experience has shown and my associates and Colonel Finck, in particular, whose special field of interest is wound ballistics can give additional testimony about this scientifically observed fact.
This wound then had the characteristics of wound of entrance from this direction through the two tables of the skull.
Mr. SPECTER - When you say "this direction," will you specify that direction in relationship to the skull?
Commander HUMES - At that point I mean only from without the skull to within.
Mr. SPECTER - Fine, proceed.
Nope! This comment is not in regards to the occipital wound.
It is in reality about the "shelving"/coning effect/aka beveling effect of the bullet which exited the frontal portion of JFK's skull and left the metallic residue embedded on the inner table of the skull.
The following attachement is a portion of that segment of skull marked "
A", which represents the skull cap section of the top of JFK's head which was blown off as a result of the Cowlick entry and frontal exit of the bullet.
If one will look at "
a1", they can observe the "shelving" of the outer table of the skull, where the exiting bullet created it's shelving/coning/beveling effect on the outer table of the skull as it blew this portion of the outer table away and thus left the "stair-step" effect in the top table of the skull where the skull goes from normal thickness, down to only approximately 0ne-half thickness.
Thusly, there is the exit point where the bullet which struck in the cowlick, began to exit the skull and thereafter left it's "shelving" effect on the outer table of the skull.
It is also noted that this point, just below and slightly rearward of the exit point, in the brain, is the beginning of metallic residue embedded in the brain.
That I am aware, no one has ever taken the time and effort to explain this exiting point either!
Simply amazing what one can learn if they actually conduct research!
Questions?