Mr. Eisenberg. Did you attempt to determine whether Exhibit 142 had the same origin as the paper in Exhibit 677, or might have had the same origin?
Mr. Cadigan. Yes; I examined the two papers—do you wish me to state my opinion?
Mr. Eisenberg. Yes; please.
Mr. Cadigan. Well, initially, I was requested to compare the two papers to see if they could have originated from the same source. I first measured the paper and the tape samples. Then I looked at them visually by natural light, then incident light and transmitted light.
Mr. Eisenberg. What do you mean by transmitted light?
Mr. Cadigan. Well, light coming right on through the paper.
Mr. Eisenberg. Then——
Mr. Dulles. Natural light?
Mr. Cadigan. Yes; natural light.
Mr. Dulles. As distinct from electric light?