LENGTH OF A DEGREE 9 



V 



Actor De spera concordat in latitudine climatum, et 

 non in circuitu terre. Nota quod quolibet gradu equi- 

 noxialis realiter respondit miliaria .56^.^° (The author 

 of "De spera" agrees in the latitude of the cHmates, and 

 not in the circumference of the earth. Note that each 

 degree on the equator really corresponds to 56^ miles.) 



VI 



Nota quod latitudo climatum quem hie videbis, in 

 qua omnes actores concordant, respondet quolibet gradus 

 miliaria .56^^. & hec est realis, reliqua vero vocalis.^^ 

 (Note that the latitude of the climates which you will 

 see here agrees in all the writers; each degree corresponds 

 to 56^3 miles. And this is a fact, and whatever anyone 

 says to the contrary is only words.) 



VII 



Nota quod sepe navigando ex Ulixbona ad austrum 

 in Guinea, notavi cum diligentia viam, ut solent nau- 

 cleres & malinerios, & postea accepi altitudinem solis 

 cum quadrantem & aliis instrumentis plures vices, & in- 

 veni concordare cum Alfragano, videlicet respondere 

 quolibet gradu miliaria .56%. quare ad hanc mensuram 

 fidem adhibendam est; igitur posimus dicere quod cir- 

 cuitus terre sub arcu equinociali est .20400. miliaria, 

 similiter quod id invenit magister Yosepius fixicus & 

 astrologus, & alii plures, misi solum ad hoc per serenissi- 

 mum regem Portugalie, idque potest videre quisquam 

 mentientem per cartas navigationum., mensurando de 



10 Ibid., p. 378, No. 30. 



11 Ibid., p. 378, No. 31. 



