31 



from home about the north, he may have added to the old 

 maps while he was in Italy. 



We see the result a short time after, namely in the Avell- 

 known, valuable Ptolemaeus MS, which Cardinal Filiaster 

 caused to be made in the year 1427, and which is now pre- 

 served in the City Library of Nancy. On the map of the 

 northern regions which is found there*), the northern lands, 

 including Greenland, are surprisingly correct in form and situation, 

 when compared with the older maps. There are indications 

 enough that this change is due to the Danish map-drawer, 

 whether Filiaster has directly employed him to draw this map 

 for him, or he has only used a copy of one of Clavus's own 

 maps. For a time, this new type of map was continually in 

 conflict with the old. The incorrect representation was repeated 

 in later editions of Ptolemaeus (Nie. Donis or, as Fischer calls 

 him, Donnus Nikolaus, Ulm 1482 and 1486), and seems even 

 still later to have become especially wide-spread through Wald- 

 seemiiller's map of the world 1507**). 



Clavus's map, on the other hand, forms the basis of that 

 representation of the northernmost parts of the world given on 

 Joh. Schöner's globes, which in turn have influenced Merkator's 

 and Ortelius's later cartographical works (through Waldseemüller's 

 Carta marina 1516, where Greenland is correctly placed***). 

 Also that map of the northern lands from the Zamoisky Library 

 in Warschau, which Nordenskiöld has called attention to, as 

 likewise several Florentine manuscript-maps from the 15"' C. 

 belong to this typef), which, however, first became firmly 

 established at the appearance of the Zeno map in 1558. 



Of great interest are the place-names which are found 



*) A good facsimile of it together with the inscriptions is to be found in 

 NordensJiioid: Studier och forskiiinger, Stockholm 1883, pp. 62 if. 

 ••) Fischer, u. s. pp. 86 ff. 

 •**) lb. pp. 95—97. 

 t) lb. pp. 71—72. 



