302 Henry Stevens's Historical and Geographical 
further elucidation and a full declaration of authorities. These, 
when spaceismore abundant. Meanwhile the reader is invited 
. to study well the accompanying photo-lithographic facsimiles 
of some of the oldest and most important maps and charts per- 
taining to our coasts. Itis not permitted to every one to see 
and touch the precious originals, scattered and secluded as they 
are, in various public and private repositories, throughout Kurope 
and America. Not three persons exist probably who have seen 
them all. The copies here given, imperfect as they are, speak 
clearly to the eye, and will doubtless repay careful examination, 
though a few explanations may aid the reader in understanding 
em. 
And first, The Portolano, or marine chart of Juan de la Cosa, 
im at Puerto de Santa Maria, near Cadiz, in 1500 
for 4020 francs, is now preserved in the Royal Library at Mad- — 
found it to 
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