Weekly national intelligencer., 1850-08-17
THE lsrHMUs OF TrHUANTEPEe.

The following letter from Mr.. Mono, the engineer
of the Isthmus Of Tehuantepcc, will be read with
interest The whole Isthmus is about TO be re.sur-
veyed and Mr.. Mono states in advance one or two
inaccuracies in his former report, making the cer-
responding corrections
MExIco, July IL. 1850.
Mr. DEAR srn It is than year, as you know, that,
having determined connect by Of direct o5serpasion
the southern portion Of the Ishmu whose positions had been
determined trgonomstcsy, with the northern portion in
which had been impossible make rigorous examination,
discovered that had made error Of calculation in deter
mining the longitude, which serve for the base Of the
other points to be established.
Later STILL found that in the map Of the course of the
Coszacoalco instead Of making that river empty itself in
$40 II west Of Greenwichas it is correctly stated in my
written work this Isthmus-it is placed more to the
west than ought have been. These errors have cor
rected in the map Of the Ishmus which have made
but explorations about to be- undertaken on the
Ishmus anxious that myself and Others should
correct them. To this end, / pray you to do me the
favor to have published in the papers what now COM
municate to you.
have heard 1t stated lately, in the United States. that
of the Isthmus Of Tehuantepec.
II positively established well by history written by
Franciscan ar BY the Of Bugos, printed n Mexico
1870 we'll by documents found in the archives Of the
be built several vessels the lakes Of Tehuanepec all Of
which through the Boca baa and Of which
employed in the discovery Of California whilst the
others went to Panama commercial enterprise, con-
nected with Peru which undertaken by Corez himself
What has given these doubts is that times the
port of Tehuanepec has been COMPOUNDED with the mouth Of
the river OF this name which last has alternately emped
into be bay the Of the MORO del Carbonas actually
doesand then into the upper lake. from which discharged
itself prior to 1907
In ls47, myself followed the deserted bed Of the river
and had in my power satisfy myself that emped into
this upper lake little the south of the hacienda of the
Paso de los Lagartos In with this other crcu-
stances are to be explained which will refer in the work
which am preparing for publication.
Others doubt, understand, the suciency Of water in
the Pacific ocean the coast of this gulf Of Tehuante
pee do know what foundation there is for this doubt
unless it be found in expressions Of VIM. Funnel
who advises navgatos to keep at leagues from the coast
order avoid the low water Of the intermediate space
But Dampier who naMgaed these at the PERIOD
eproaches Funnel several occasions for his want Of
racy and in fact this author after having said what
Just referred to, adds "Fve leagues from hence
(Pot Sainas) is the great town Of Tecoanepeque. All
along here the very popuous and great stores of
pearls are found near the Shore in the bay Of Tecoane
peque, ,ohich IS good port"
II, after ALL there existed any shoals in this gulf they
would not to than those which surround the
Bemudas; which, Notwithstanding admit vessels Of the
srgest size. But certain IS that from the height of the
Moro, have been able to observe any thing which
indicated the existence of the alleged shoal am, &C.