is a mistake, as the exterior seen are out of a chocolate color but are slightly white. He also showed me several examples of Pentamerus Almyra reserved in siliceous casts of the interior. These have either been drifted here from the north or indicate the existence of Oracina stratae in this vicinity. Of trilobites he has quite a selection giving the Survey collec- tions several fine examples. Two great male gastros are to be returned to him with gatta-percha impressions. These trilobites are found in a quarry on the farm of a Mr. [illegible] about two miles of the river from Brange and he located in Iowa. The associatio