Keeping in mind the description of the stone point given in the story, we can state Marshall the rancher was looking at a Folsom point.
As it's known, a Folsom is a kind of stone point with a leaf-like shape which has a concave base and wide, shallow grooves/flutes running almost the entire length of the point.
Feudalism is as dualism; therefore, dual federalism is a situation where two governments participate in a power of sovereignty in different areas. However, this is a rare occurrence since it affects fewer countries, such as Hong Kong.
The dual feudalism is the government that holds a federalist relationship together with other governments along with other simultaneous connections with a similar government. It can also mean three governments are sharing sovereignty power intended to rule certain areas or maintaining the specific laws.
Their is no flexable glass its not possible