Statistics for occurrence #1 of “Mercator” in chapter 6, page 134 of George Ticknor, Life, letters and journals of George Ticknor:

...es. May 16.—M. de Humboldt is certainly one of the most remarkable men I have seen in Europe,—perhaps the most so. I was sitting with him to-day, and, turning round, observed a large Mercator 's Chart
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Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
† Mercator 4 2 0 0 0 user votes
Gerald Mercator 6 0 0 0 0 user votes
Gerard Mercator 6 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.