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THE SUPPOSED 1544 CABOT CHART; THE SANCHO GUTIERREZ 1551 SIMILAR CHART AND THEIR ANOMALIES.
ABSTRACT
Two very differently presented planispheres with a basically similar world format and containing copious texts as well as additional side pieces. The texts are in all probability copied from another source and are not by the cartographers. A major problem is that Sebastian Cabot did not draw the chart which bears his name, it is an engraving of a chart thus earlier than the 1544 date which appears on the chart. The format is surprising in that it is only one of a very few charts of such a size to be drawn as an oblate spheroid which as will be shown presented very many problems for the engraver. It is also visually perturbing in that the deformation of the continents is so very obvious. The Sancho Gutierrez planisphere is however a more normal rendition of a chart, that is it is four square, equal degrees and follows the original Portolan charts basic methodology. Both charts feature a very special cartouche of an Eagle which is a link to other charts and atlases being drawn in that period.
Having read various texts concerning these two planispheres and being of the opinion that the idea they were somehow copies was rather spurious and thus it became necessary to investigate them both and quantify their contents. One text however, mentioned at the end of this text will provide the details omitted here-in. This is a text about the cartography there-on.
The text contains 8, A4 pages and 12, A3 diagrams
