that these objects might take. Most
Figure 8.2 J. C. R. Colomb, map of the BritishEmpire from 1886. Norman B. Leventhal
Map Center Collection, CC BY-NC-SA.
importantly, the temporal dimension is almost entirely absent, giving little or no
sense of chronological change, and presuming the preservation of these routes
over significant lengths of time.
Flow maps, by contrast are in essence an application of the principles of the
flow chart to cartographic mapping (and more specifically to thematic mapping,
wherein maps are designed to emphasise