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Show 502 that phenomenon? " A. I never saw it before, sir. " Q. Will you describe it as you saw it here? " A. In the first place, the sand waves as noted were always at points where the water was comparatively swift, and by taking soundings with an oar we found the water was comparatively shallow. " As we observed one of those places, the phenomenon seemed to run through a rather distinct cycle. We would note that the surface of the water was very choppy, a series of little waves covering this, what might have been considered a very minor rapid point of swift water with a very choppy surface. [ R. 1360] " Without apparent reason, or other warning, these waves, these chops, would suddenly develop into a series of well- defined, smooth, undulatory waves. They differ from ocean waves in that the waves are comparatively stationary, while the water runs through at a swift pace, whereas in the ocean wave the water is comparatively stationary, merely passing through a small orbit, and the wave goes on. " The line of the crest and troughs of these waves were ordinarily diagonal to the river; I should say they were pretty near at forty- five degrees with the axis of the river. " We had an open boat, a skiff-- [ R. 1261] " BY THE SPECIAL MASTER: " Q. One minute. You mean at an angle of forty- five degrees, |