Dr. Olivier. Yes; I do.
Mr. Specter. And did you have occasion to conduct such a test in connection with the series which you are now describing?
Dr. Olivier. Yes; I did.
Mr. Specter. And would you outline briefly the procedures for simulating the human skull?
Dr. Olivier. Human skulls, we take these human skulls and they are imbedded and filled with 20 percent gelatin. As I mentioned before, 20 percent gelatin is a pretty good simulant for body tissues.
They are in the moisture content. When I say 20 percent, it is 20 percent weight of the dry gelatin, 80 percent moisture.
The skull, the cranial cavity, is filled with this and the surface is coated with a gelatin and then it is trimmed down to approximate the thickness of the tissues overlying the skull, the soft tissues of the head.
Mr. Specter. And at what distance were these tests performed?
Dr. Olivier. These tests were performed at a distance of 90 yards.
Mr. Specter. And what gun was used?