Various2018-05-092018-05-091889TRA-050-02-001http://hdl.handle.net/20.500.11867/72157 page typed transcription, created by Click Relander."The oldest forms of arrow heads were evidently fashioned of some soft material and left to harden in the fire. These show no traces of tools upon their surface and by exposure to the elements are many times lighter upon their surface than upon their interior."NO KNOWN COPYRIGHT The organization that has made the Item available reasonably believes that the Item is not restricted by copyright or related rights, but a conclusive determination could not be made. Please refer to the organization that has made the Item available for more information. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use.