What requirement was necessary for all boundary points in Mexican grants?

The requirement for all boundary points in Mexican land grants was indeed tied to establishing bearings and distances to specific landmarks, which often included notable features such as trees. This practice was crucial during the time when the Spanish and later Mexican land policies were implemented. Since exact surveying techniques were not as refined as they are today, land grants relied heavily on physical and recognizable landmarks to define boundaries. The reference to two trees would provide a reliable method for identifying the location and extent of a property, as these features were less likely to change over time compared to other forms of identification like houses or coordinates.

The use of trees as reference points was particularly significant because they could serve both as visible markers and as a means to communicate specific distances and directions, which were vital for establishing property lines. The precision in describing boundaries in this manner was essential for settling disputes and ensuring clear ownership.