Thus, with Metschnikoff we recognise the succession of potamic, thalassic, and oceanic civilisations; with Reclus we see the regular distribution of minor and major towns to have been largely influenced not only by geographical position but by convenient journey distances.
"Civics: as Applied Sociology"
Patrick Geddes
The North Zirks have ridden all the way around it, on hipposaur-back, in the high latitudes, and the thalassic peoples at the Equator have sailed all the five equatorial seas and portaged all the isthmuses between.
"Uller Uprising"
Henry Beam Piper, John D. Clark and John F. Carr