Mr. Shaneyfelt.

negative and reproduce the shadowgraphs of Commission Exhibit 749 and Commission Exhibit 752.

Mr. Eisenberg.

Could you refer now to that chart?

Mr. Shaneyfelt.

Yes, sir. Referring to the chart then, the examination was made by comparing the edges, not only for size but general contour, and I have marked with numbers from 1 through 8 some of the more outstanding points of identification.
The eight points are not all that accounted for the identification. The identification is based on the fact that not only those eight points but every place else is the same on both negatives.

Mr. Eisenberg.

And the contours are also the same?
Mr. SHANEYFELT, The contours are the same, yes.

Mr. Eisenberg.

So you have taken these eight points for demonstrative purposes?

Mr. Shaneyfelt.

That is correct.

Mr. Eisenberg.

Rather than as being actually what you rested your identification on, is that correct?

Mr. Shaneyfelt.

That is correct.
Point No. 1 which is in the lower right hand corner, as you view the picture of the chart----

Mr. Mccloy.

Lower left-hand corner?

Mr. Eisenberg.

As you view it, lower left hand?

Mr. Shaneyfelt.

As you view it, lower left hand of both of the charts, shows a notch that makes the shadowgraph other than a straight line.

Representative Ford.

This is very clear.

Mr. Shaneyfelt.

This appears the same in both charts. Point No. 2 is another similar notch except that it is a double one, and the little notches are smaller. This again is the same in both charts.
Point No. 3 is more of an indentation, a slight curvature where the edge curves out a little and back in toward the corner. It is not as pronounced a dent.
Point No. 4 is only visible by looking at the chart in this direction because----

Mr. Eisenberg.

This direction being from left to right as you look?

Mr. Shaneyfelt.

Left to right, because although this line looks straight it actually dips down and back up again.

Mr. Eisenberg.

"This line" is the line at the top of that exhibit?

Mr. Shaneyfelt.

The line of the shadowgraph at the top of the photograph.

Representative Ford.

That is point No. 4?

Mr. Shaneyfelt.

Four. Point No. 5 again is a slight dent or bulge in the edge and shows in both charts.
No. 6 is a more shallow and wide indentation along the edge.
Point No. 7 is again the same type of a characteristic as the others, but a little different shape.
Point No. 8 is a little fragment of bakelite or debris extending out from the edge, that shows in both of the charts in the same manner. In addition the corner at eight tends to curve in towards the picture as it approaches the corner, there tends to be a curvature in and not a nice neat square corner.
In addition, between points 2 and 3 there is a very definite S-curve where the bakelite from which the camera is made apparently warped slightly making this S-curve, and this is apparent in both charts. Again, more apparent as you hold the photograph flat and look down the line.

Mr. Eisenberg.

Now, the margins of the shadowgraph in the right-hand side of the chart, which is based upon 133B, look somewhat larger than the margins on the left-hand side.
Could you explain that?

Mr. Shaneyfelt.

That was merely a matter of masking during the printing process.

Mr. Eisenberg.

That is to say it is the interior which is crucial rather than the width of the margin?

Mr. Shaneyfelt.

That is correct.

Mr. Mccloy.

This mark along the bottom appears in one. How do you explain that?