LENGTH OF A DEGREE 



15 



.CALl^a-BRECARl.-8'°''^IiR,V,.,/-'*r>.VAC«n!^^^' 

 _....IL .,.',m,<^n.^»«,. TVOI / / ■ ..^.^^ <^^ 



RakviFnCMETANI- ,^ —""A -■ 



- „u«o«Tca£RINO(V5j^=fc. •l.VAN(.OR\ 



; .CII.OMI" -j—^. ....—■. 



i;f^m4^ 



^-CAVCA Z' 







^LveI^^NIsJ' -"RPfTAN,. 



J • ISP" •' ANIA.-,. ..>v\,i->-.^ r-o" 







^i^j^ki-iSeKfe^ v^ 



L^':i:S;VS-:\V.\i^-" 



Fig. I—Part of the map of the Iberian Peninsula in the 1490 edition 

 of Ptolemy, to show the latitude of Lisbon (after Nordenskiold, Facsimile- 

 Atlas. PI. 3)- 



