In the side of a sleepy black steer, Dr. Arthur F. Schalk carved a hole big enough to push a beer bottle through. Straight through the abdominal wall he sliced, until the interior of the rumen and the reticulum—two of the four bovine stomach cavities—was disclosed to view. When the edges of the hole in his steer had healed, plump, white-thatched Dr. Schalk, professor of veterinary medicine at Ohio State University, stoppered it with a wooden plug.
Professor Francis W. Davis of the university's photography department removed the plug, brought a cinecamera up...
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