3. Situs [situation] is the location of parts. … In the former … the distance from the beginning and the end … [is considered]; in the … from another part is viewed. Hence the former … the later is expressed … best by a circle … We will therefore do well to call the … Thus by reason of order the following situses … situs, namely this: [a circle of a b c d].
Google-1
Google-2
Copyright clearance needed for quotation.