The premise was simple enough.
If the people who first used this map had travelled its roads and sea-lanes, the imagery – style, content or both – should occur along them.
This would address the question of fifteenth-century authorship, first the question of whether the imagery was imaginary, and secondly whether any posited individual might have had access to relevant sources.
It was part of the process needed to assign the imagery to its appropriate time, and see if I should focus on one particular region or another.
So – The map became a site-plan, with each century a stratum.
I’m showing the 1stC AD I had put up a ‘postcard’ showing items from this century set in their locations around the map in f.86v. The uncaptioned picture has since been removed].
The first century AD was a very busy century indeed – including the temporary kingdom of Palmyra, the construction and renewal of the sea-route to India, and and destruction of Jerusalem.
The first century also provides many parallels for imagery in the bathy- and pharma- sections, and as much in regard to stylistics as objects.
Pictures are placed around the map as close to their find-place as possible. Some few (like the Buddhist umbrella) I’ve had to illustrate with more recent pictures but these are true to 1stC AD forms.
[In the ‘postcard’ image] I had to omit all the imagery relevant to the cross-bow and all that from Palmyra, Arabia and the Persian Gulf, but I felt that was included should have been enough to explain why I believe the range of original source-material should be dated “3rdC BC with earlier precedents to not later than the 3rdC AD”
One much later item is in it: a snippet from Brouscon’s late medieval mariner’s charts.
I had so many comments that the ‘postcard’ was no substitute for detailed commentary that I’ve removed it for the time being. I agree the format is probably better suited to a summary after the historical explanations than as an introduction to them.
[updated Jan 3rd, 2013]