More on things that are found, the status of which is unknown. Specifically, items found in dangerous settings, where the likelihood of the owner thinking that he or she would still get it back is negligible. For example, the clutches of a lion. Thus, they relinquish ownership: "ye'ush" - despairing of ever getting that item back again. Including public thoroughfares, which leads to the presumption that the majority of people in Jerusalem are Jewish, which has halakhic implications for found items, specifically when it comes to kashrut. Why not publicize things for their original owners to come claim them? It seems that there's no need, and doing so may not actually be desirable. Also, found animals were presumed to be offerings. 7 decrees by the court to address issues of the time - including a korban offered by a non-Jew. And now concerning the administration of korbanot in the Beit HaMikdash.