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Expedition 1920 Agate Springs Quarry. Albert Thomson }party George Olsen Mrs. Thomson From June 20th to Oct 28th Began excavating at N. Western end of the old quarry, where work was left off in 1914. A cut about 100 ft. by 20 ft was begun and worked down about 15 ft. Then the cut was cut in half down to bone layer which was about 15 ft more. At the bone layer we came in contact with the original channel bed bank which cut off about half of our expected uncovering. Though just in beyond this bank a very good pocket occurred. Rhinoceros material principally. Though a great deal of Moropus as well, which undoubtedly belongs to skeletons already collected in 1914. No signs of Dinohyus material all season, but if any more occur in the hill there is reason to believe it should be found in this pocket, if we keep working in, Though from now on we must do tunneling. For convenience of record I have numbered this seasons Moropus material No.15 15x15A +B to +16 be kept in one lab until prepared and assembled with Moropus skeletons already prepared at the Museum. A great deal of Rhinoceros material was also collected, though we found it very difficult to preserve Rhino. Material while taking out Moropus. The last large Moropus skeleton No16 consisted of nearly all the ribs, hind limbs, lumbars 1/2 of pelvis, and probably skull + jaws belong to this individual and also a very large scapula, ulna radius + humerus all numbered 15. (written along side : 11321) A few bones under No18 were found near what we called the bank and rather higher than the rest. The quarry was closed for the season Oct. 28.