Section II., 1899. [ 467 ] " Trans. R. S. C. 



^11. — The Line of Demarcation of Pope Alexander VI. in A. J>. 1J^93 

 and that of the Treaty of Tordesillas in A.D. 1494; with an 

 inquiry concerning the Metrology of Ancient and Mediœval 

 Times. 



By Samuel Edward Dawson, Litt. D.' (Laval). 



(Read May 26, 1899.) 



CONTENTS. 



I. — Introductory 4(38 



II. — Public InternationalLaw in A. D. 1493 -ITO 



III.— The Form of Papal Bulls 481 



IV. — The Demarcation of A. D. 1493 484 



Y. — The First Line 491 



VI.— The Treaty of Tordesillas in 1494 and the substituted Line 496 



VII. — The Point of Departure ,500 



VIII. — Ancient and ]\Iedia?val Measures of Length .502 



IX. — The Lines of Demarcation on the Ocean and their supposed contact 



with the Northeast Coast of America 517 



APPENDICES. 



A.— The Bull of Demarcation of A. D. 1493 {Inter cetera), collated with the 



suppressed draft ; with an English translation 529 



B. — The Bull of A. D. 1493 {Exvniae derotlonis) granting to' Spain, west of 

 the Line, the same rights as had been granted previously to 

 Portugal in the east ; with an English translation . . ; 535 



C— The Bull of Extension of September 25, 1493 ; with an English translation 538 



D. — The written opinion of Mossen Jaume Ferrer upon the Line of Demarca- 

 tion, presented A. D. 1495 to the Spanish Sovereigns 541 



E. — A table of opinions held by the greater Cosmographers of ancient and 

 mediœval times concerning the circumference of the Earth and the 

 length of a Degree upon the Equator 545 



Sec. II., 1899. 30. 



