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and the information it contains I am able to corroborate and 

 supplement from a valuable collection of Cartographic and 

 Historical Transcripta, made by Mr. Morris some years ago 

 for the use of this Society. 



Commencing our Cartographic investigations vsrith the year 

 1500, we find that the map of Jean de la Cosa published in 

 that year throws no light on the subject. But the map;pemonde 

 of J. Euych (1508) deserves particular notice for it groups 

 together, to the East of Madagascar, three Islands which it is 

 easy to identify as Bourbou, Eodrigues and Mauritius ; their 

 identification being confirmed by the official map of the impe- 

 rial cosmographer Diego Eibero, dated 1529, on which throe 

 islands occupying nearly the same relative position are traced, 

 the name of Ya de Mascarenlias being given to the most 

 westerly, Ya de Domingo Fernandez to the most easterly, 

 and Ya de St.-Apoh7i{a to the one in the middle, marked to 

 the Southward of the two others. In Ruych's map, investi- 

 gated with the aid of Eibero's, the Indo-Arabic name of 

 Camarocada is given to Madagascar, suggesting the initial 

 word Comor, frequently found in later maps and still extant 

 in these parts ; Marganhin seems to denote Bourbon, Dlnanorca 

 Mauritius, and JDinarohin Eodrigues, A Genoese map, without 

 date, quoted by Buach (Mem- de VInstitut, dep mor. et polit. 

 tome IV) give these names as Dina MorgaMn, Dina Moraze 

 and Dina Arebi. A terrestrial globe, without date, but said 

 to be of the 1 st half of the XVI century, preserved at Franc- 

 fort on the Maine, shews, among a confused mass of islands 

 in the Indian Ocean, three islands in nearly the same relative 

 position as those already alluded toon Buych's map. The 

 Dinanorca (Mauritius '?) of the latter is here called Dinamo- 

 zara, Margahyn (Bourbon ?) appears as Bimohaz and Dinarogin 

 as Dinarohin. If the recognition of the Indian name Bw, 

 Sanscrit, dvipa, island, in the initial sounds of these three 

 names, is correct, we must suppose a clerical error. A M. S. 

 Italian atlas, unfortunately without date, in the Imperial 

 Library of Paris, but certainly early, shews in a line from 

 W. S. W. to E. N. E. three islands, of which the most north- 

 erly has the name of Y. de Nazary, the most southerly is called 



