According to Turner V. Smith, what must happen when surveys are connected in a block?

In Turner V. Smith, the principle addressed pertains to the treatment of excesses when surveys are connected in a block. The requirement that excesses must be prorated only within marked lines and corners of the subject land means that, when multiple surveys are gathered into a single block, the adjustments needed for excesses must conform to the specific boundaries as established by those surveys. This ensures that the integrity of each individual survey's boundaries is respected while still allowing for the necessary adjustments to account for discrepancies in the surveys' connections.

The emphasis on marked lines and corners highlights the importance of adhering to the physical properties and defined edges of the surveyed areas, which are crucial in land surveying to avoid any ambiguities or disputes regarding land ownership and boundary definitions. This principle helps to maintain consistency across surveys within a block, as the prorating is done strictly according to the legally defined and physically established lines rather than arbitrarily across broader or undefined areas.

Additionally, when dealing with the other choices, it is clear that they do not align with the requirements established in the case. The need to account for excesses only within marked lines ensures accuracy and respect for established boundaries, something that the other statements might overlook or misinterpret in terms of survey integrity.