to renew their provisions at easy prices at the Isthmus, there- 
fore they might devote a greater portion of their hold to the 
storing of merchandise. 
Besides these purely local advantages, the isthmus of Te- 
huaatepec offers over those of Nicaragua and Panama others of 
a more general nature for navigation, affording to vessels pro- 
ceeding to Asia or the N.W. coast of America, a communica- 
tion more direct and through a more genial climate. On their 
return, they are now obliged to keep in northern latitudes, and 
direct their course towards the Calif ornias, in order to escape 
the influence of the trade-winds, and for these also the route 
through the isthmus of Tehuantepec would be much less cir- 
cuitous. Lastly, the fresh but not dangerous north and north- 
easterly winds are common to the whole of the American isth- 
mus, but Tehuantepec is not subject to the protracted calms 
which at some seasons of the year paralyse navigation at 
Panama. 
The table D in the Appendix, shews a comparison of the dis- 
tances of the voyages to the principal places in the Pacific and 
Indian Oceans affected by the opening of the proposed Tehu- 
antepec Ship Canal, the immediate advantages of which to 
Navigation are palpable without further demonstration. 
