VI 
CONTENTS. 
PAGE. 
—the river Ostuta,—its waters to feed the proposed Canal,—the 
ground north of Chivela, Guichicovi, and Boca de Monte,—first 
sight of the Coatzacoalcos at Mai Paso, its transparency, firm Clay 
banks, slow current,—its borders lined with thick woods.—Excur¬ 
sion down its course to its mouth,—weather then unfavorable for 
observations.—Visit to Acayucam,—the Jumuapa.—Return to 
Tarifa,—Venta de Chicapa,—ground examined from San Miguel 
to the river del Corte,—the Upper Coatzacoalcos.—Cerro de 
Albricias,—the view from this fixes the choice for the passage 
of the Canal over the Gap of Tarifa,—its minute description.— 
Departure of Capts. Robles and Gonzales to survey the Coat¬ 
zacoalcos,—the river Chicapa.—Tarifa and the Ultimo Rancho 
have the same level.—Volume of the waters of the Chicapa below 
its junction with the Monetza.—Cerro delConvento.—Source of the 
Monetza and river at Tarifa, same level,—also the Portillo ;—the 
Ostuta examined and practicability of joining its waters by a 
conduit to those of the Chicapa.—Capt. Robles completes the 
survey of the lower Coatzacoalcos, and examines the upper waters 
to the Sarabia.—Sr. Moro explores the ground from Tarifa to the 
confluence of the Malatengo with the Coatzacoalcos, also from 
Tarifa to the Rio del Corte.—Re-inspection of the proposed line of 
Conduit for the joint waters of the Ostuta and Chicapa to Tarifa by 
Messrs. Moro and Robles and their confirmation of its practica¬ 
bility,—final return of the Commission to Tehuantepec, the explo¬ 
ration of the Isthmus being completed.33 
CHAP. V. 
Survey of the Coatzacoalcos, rises in the Sierra Madre—examined 
from the confluence of the Chimalapilla all the way to the sea.— 
The streams of importance are, (on the right bank), the Chimala¬ 
pilla,—del Pina],—Clialchijapa,—at the Horqueta the right branch 
is called Apotzongo—branches re-unite near the Rancho del 
Mariscal—Coacliapa—Uspanapan—Creek Coatajapa and several 
useful Lagoons—(left bank) the Milagro—Escolapa—Malatengo 
—Sarabia—Jumuapa—Jaltapec—the Naranjo and Penas Blancas 
—the river divides at the Horqueta; to the left is the Mistan 
forming the Island of Tacamichapa—Creeks, Tacojalpa, Ojazapa, 
Cuamecatan, and Tacateno—the river Calzadas—which branches 
off and enters the sea at the Barilla—The borders of the Coatzacoal¬ 
cos and its tributaries covered with dyewoods, mahogany and 
other fine trees and forests of timber fit for ship-building—the 
Upper Coatzacoalcos abounds in lofty pine trees—Coatzacoalcos 
navigable for the largest ships for 34i miles—the bar does not shift, 
and leaves two entrances—has 20^ feet over its western passage— 
This Harbour the finest in the Gulf of Mexico. 49 
CHAP. VI. 
Statistical notes of the Isthmus of Tehuantepec. 
58 
Southern division in the department of Oajaca—the northern in that 
of Vera Cruz—Inhabitants—Climate—Minerals—Vegetables— 
Animals—Agriculture—Cattle—Salt—Industry—Antiquities 
