CLAUDIUS CLAVUS 



in the copy of Clavus's text either, we are bound to believe that 

 he did not include it. The margin on the western side of Clavus's 

 first map was evidently determined by that of Ptolemy's map 

 of the British Isles, and follows precisely the same meridian. 

 Thus there was no room for the Medici map's peninsula corre- 

 sponding to Clavus's Greenland. As already stated, it is difficult 

 to get away from the belief that the Medici map was used for 

 the east coast of Greenland, the south coast of Norway, etc.; 

 the resemblances are too great, and otherwise inexplicable 

 (cf. p. 261, note 3). 



After the first map was drawn, Clavus may have made 

 further cartographical studies in Italy, and may thus have 

 become acquainted with other compass-charts, especially 

 those of the Dalorto type. At the same time he may have 

 obtained a new and more accurate determination of the 

 latitude of Trondhjem, probably by the length of its longest 

 day. As Trondhjem was an archbishopric, it is not unlikely 

 that he found such a piece of information in the papal archives 

 at Rome. He may then naturally have wished to bring his 

 map more into agreement with his new knowledge, and this 

 may have led to his later map, which is now known to us 

 through several somewhat varying copies. To this he then 

 wrote a new text (the Vienna text), which in all important 

 points resembles the former, but has various additions and 

 alterations. The later map has not the double scale of lati- 

 tude on any of the copies known, but, curiously enough, only 

 Ptolemy's degrees. Besides, a more accurate delineation of 

 Jutland and the Danish islands, especially Zealand, Bornholm, 

 and Gotland, is drawn in closer resemblance to the Medici 

 map; the south coast of Scandinavia has been altered to 

 agree more with compass-charts of the Catalan type. In 

 particular, the south coast of Norway has been given the four 

 characteristic promontories (as on the Dalorto map of 1339, 

 and on the Modena map, etc.; cf. the reproductions, pp. 226, 

 231), and Bergen (Bergis) has been placed at the head 

 of the westernmost of the three bays thus formed, which is 



265 



