text:  While examining the caverns of calcareous rocks he has found in one of them mixed with the bones of extinct races of animals human bones having all the character of fossils; they are stated to be in part petrified and in part penetrated with iron particles which gave to them a metallic lustre resembling bronze; they were of extraordinary weight; the crania presented the narrow forehead prominent zygomatic bones the facial angle the maxillary and orbital conformation of the American race