No. 51.
Mr. Shannon to Mr. Fish.

No. 148.]

Sir: Inasmuch as the reported arming of the island of Martin Garcia, by the Argentines, was referred to by the Viscount de Caravellas in our conference of the 2d instant as a direct violation of treaty stipulations, and notably of an article in the treaty of 1853 between the United States and the Argentine Confederation; and inasmuch as it is more than likely (if the reported arming proved to be a fact) that the nations which were parties to the treaties of San Jose de Flores (France, England, and the United States) will be requested to take some action in the matter, I have thought it well to collate the evidence showing what has been the action of Brazil herself upon this subject under like circumstances in the past, (for the fortifying and arming of this island has already occurred several times before and been made the subject of special diplomatic negotiations,) as well as what has been the interpretation heretofore given by her to those treaty stipulations now declared to be violated.

The island of Martin Garcia is situated opposite the city of Buenos Ay res, in the River Plate, and within cannon-shot of the Oriental shore and territory.

Its true ownership is still a disputed question between the Argentine Confederation and Uruguay, although the former holds possession, and it is claimed and occupied as Argentine territory. It may more strictly, perhaps, be regarded as a part of the province of Buenos Ayres, which has always held possession of it whenever that province was separated from the Confederation; and indeed it was while Buenos Ayres was so separated from the Argentine Confederation, and holding possession of the island, that the San Jose de Flores treaties of 1853, and the Brazilian treaty of 1856, were negotiated with the latter government.

* Inclosures 1, 3, and 4 are translations of such parts of the several treaties as relate to the island of Martin Garcia; treaty of 1851, between Brazil and Uruguay; treaty of 1853, between the United States and the Argentine Confederation; and treaty of 1856, between Brazil and the Argentine Confederation.

Inclosures 5 and 6 are translations of so much of the reports of the Brazilian minister for foreign affairs, for 1860 and 1864, giving accounts of the negotiations and discussions which arose from the arming of the island in 1858 and 1862.

On both occasions Brazil was appealed to by the governments of Uruguay and the Argentine Confederation to interfere by force, if need be, to secure the neutralization of the island, they claiming that, by terms of Article XVIII of the treaties of 1851 and 1856, she was not only empowered but obliged to do so.

The Brazilian government, however, declined to go beyond the employment of good offices to secure the disarmament of the island, declaring that the terms of Article XVIII did not authorize her to make use of force, and that, in fact, those treaty stipulations amounted to little more than a recommendation for some future action in the matter.

[Page 76]

The report of the minister for foreign affairs of Brazil, for 1864, contains the following:

The armament of this island has neither been prevented nor permitted. There was only one voice, one accord, (agreement,) between the contracting parties to obtain from that one which should be in possession of the island the consent to its neutralization in time of war.

* * * * * * *

It (Brazil) did not demand, however, nor could it demand (exigir) from that government (Buenos Ayres) the disarming of the island, the conditions of which are still to be regulated, by common agreement, between the Riverine States and the powers which signed the treaties of July 10, 1853.

* * * * * * *

The government of Buenos Ayres appears to have always claimed the right to occupy and arm the island of Martin Garcia, as though it were any other part of Argentine territory, though asserting at the same time that this was done solely as a measure of defense, and not with any view of embarrassing the free navigation of rivers.

I am, &c.,

RICHARD CUTTS SHANNON.
[Inclosure 1 in No. 148.—Translation.]

Treaty of commerce and navigation between Brazil and the Oriental Republic of Uruguay, signed at Bio de Janeiro October 12, 1851.

Art. XVIII. The high contracting parties, recognizing that the island of Martin Garcia can, by its position, serve to embarrass and impede the free navigation of the confluents of the river Plate, in which all the riverine states are interested, likewise recognize the convenience of the neutrality of that island in time of war, whether said war be carried on between the Platine States or between one of them and any other power, and this for the common good as well as a guarantee of the navigation of said rivers; and they therefore agree:

1st.
In opposing, by every means in their power, that the sovereignty of the island of Martin Garcia shall pass from the possession of one of the Platine States interested in its free navigation.
2d.
In soliciting the concurrence of the other Riverine States, in order to obtain from that one to which the possession and sovereignty of the island belong, or may hereafter belong, that it shall be made a matter of obligation not to use the island to embarrass the free navigation by other Riverine States; to consent to its neutrality in time of war, as well as to the formation of establishments which may be necessary for the security of the interior navigation of all the Riverine States.

* * * * * * *

[Inclosure 2 in No. 148.—Translation.]

Foot-note on page 324 of the third volume of the work of Antonio Pereira Pinto, entitled “Apontamentos Para o Direito International,” said note referring to the Brazilian interpretation of Article XVIII, translated in the preceding inclosure.

The dispositions of this article, although repeated in the treaty of March, 1856, with the Argentine Republic, and in those treaties entered into at San José de Flores in July, 1853, between that republic, France, England, and the United States, have not been observed on the part of Buenos Ayres. In 1859 that city, being separated from the rest of the confederation, and engaged in a struggle with it, proceeded to arm the island of Martin Garcia. In 1862, when the rupture of relations occurred between Uruguay and the Argentine Republic, the arming again commenced. On both occasions complaints were addressed to the imperial government, whose interference was solicited to secure the fulfillment of the stipulations set forth in existing treaties, but Brazil did no more than lend the intervention of her good offices, and it is affirmed in the report of 1864 in* regard to this matter that, by the stipulations above cited, the arming of that island was neither prevented nor permitted, inasmuch as there was but one [Page 77] voice—one agreement—between the parties to obtain from the state which should come into possession of the island the consent to its neutrality in time of war. If this be so, then the clause of this article (referring to the interior navigation) is an improper one to figure in an agreement treating of a political and commercial interest of so much magnitude as the non-interruption of free navigation of rivers. It should have been set forth in a manner at once clear, well defined, and obligatory.

[Inclosure 3 in No. 148.]

Extract from the treaty for the free navigation of the rivers Parana and Uruguay, between the United States and the Argentine Confederation, concluded July 10, 1853, at San José de Flores.*

* * * * * * *

Art. V. The high contracting parties, considering that the island of Martin Garcia may, from its position, embarrass and impede the free navigation of the confluents of the river Plate, agree to use their influence to prevent the possession of the said island from being retained or held by any state of the river Plate, or its confluents, which shall not have given its adhesion to the principle of their free navigation.

* * * * * * *

[Inclosure 4 in No. 148.]

Translation of Art. XVIII of the treaty of friendship, commerce, and navigation between Brazil and the Argentine Republic, signed at Parana March 7, 1856.

* * * * * * *

Art. XVIII. The high contracting parties, recognizing that the island of Martin Garcia may, by its position, embarrass and impede the free navigation of the confluents of the river Plate, in which are interested all the Riverine States, as well as the signers of the treaties of July 10, 1853, likewise recognize the convenience of the neutrality of that island in time of war, whether said-war be carried on between the Platiue States, or between one of them and any other power, and this for the common good as well as a guarantee of the navigation of said rivers; and they therefore agree:

1st.
In opposing, by all means, that the possession of the island of Martin Gracia shall cease to belong to one of the Platine States interested in the free navigation of the river.
2d.
In seeking to obtain from that state having possession of the island an obligation not to use it for the purpose of preventing the free navigation of the rivers by other Riverine States, and the signers of the treaties of July 10, 1853; and to obtain, also, its consent to the neutrality of the island in time of war, as well as the formation of establishments necessary to the security of the interior navigation by all the Riverine States and the nations embraced in the treaties of July 10, 1853.

* * * * * * *

[Inclosure 5 in No. 148.]

Translation of such parts of the report of the Brazilian minister for foreign affairs for 1860 as relates to negotiations concerning the neutralization of the island of Martin Garcia, page 20.

Since the island of Martin Garcia may, by its position, serve to embarrass and impede the free navigation of the confluents of the Plate, it became the object of treaty stipulations between the Empire and the Oriental Republic of Uruguay and the Argentine Confederation.

Those stipulations form a part of conventional law established by the treaties of October 12, 1851, and March 7, 1856, and are set forth in Article XVIII of each one of them.

The government of Buenos Ayres—which was in possession of Martin Garcia when hostilities commenced between that province and the government of the confederation, established at Paraná, hostilities which have happily just come to an end, (in [Page 78] 1859,)—fortified and armed that island with the evident intention of using it as a means of defense.

Referring to the above-mentioned stipulations and attaching to them an importance which they did not have, the Oriental and Argentine governments—and the latter more explicitly—urged that His Imperial Majesty the Emperor should insist upon the disarmament, of the island, and that to accomplish it, force even should be employed, if the protest were unheeded.

The correspondence in regard to this matter appears in the notes of the Oriental minister of July 1 and August 9, of the Argentine chargé d’affaires of July 4 and August 9 and September 13, and of the imperial government of September 12.

The question which was raised merits the most serious attention. It was clear that the arming of this island would draw hostilities to that point, and so might embarrass the free navigation of the rivers in which Brazil was interested; and this being the first discussion which had arisen relative to the application of the above-mentioned treaty stipulations, it was important that no precedent should be established contrary to its true interpretation.

The imperial government studied the question conscientiously and impartially; and, being persuaded that it was not authorized to make use of force, it resolved to use persuasive means to convince the government of Buenos Ayres of the advantages of the neutralization of the island, thus avoiding any complication which might result from its armament, not only to the government of Buenos Ayres itself, but also to neutral nations, whose duty it is to protect the interests and commerce of their subjects.

That commission was intrusted to Señhor Pereira Pinto, who, with this object in view, as well as that of obtaining assurances which would tranquilize the Oriental government, as regards the attacks which it then feared, set out from this capital (Rio de Janeiro) for his post of duty on the 2d of August of last year, (1859.)

From his communications the imperial government learned with the greatest satisfaction that although the government of Buenos Ayres, fearing the armament of the island by the confederation, and wishing to avoid hostilities at that point, had resolved itself to arm that island as a measure solely of defense, nevertheless it was quite disposed to renounce that measure if it could have the guarantee that after such disarmament and neutralization on its part the same would be religiously observed by the Argentine government, Uruguay at the same time preserving her neutrality, as she had promised and as was incumbent upon her.

This disposition of the government of Buenos Ayres was seasonably communicated to the Argentine and Oriental legations; and the imperial government took occasion to express the hope that the government of the confederation would not refuse to furnish the desired guarantee.

The events which occurred in Montevideo at the time of the simultaneous presence of the Argentine and Buenos Ayres squadrons paralyzed those negotiations, and finally put an end to them shortly afterward.

The Argentine legations in Montevideo and in this capital, (Rio de Janeiro,) and the government of the confederation itself, in giving to the proceeding of the minister resident and the consul-general of the empire in Montevideo and Buenos Ayres an interpretation which was justified neither by their intentions nor by their acts, had complained of these, pretending that the island of Martin Garcia, an integral part of the Argentine territory, had been made the object of negotiation without either the consent or hearing of the national government, and that the withdrawal of its squadron from the port of Montevideo had been offered as a condition to the neutralization of the same island.

The documents annexed in their proper place explain the question. A brief statement will be sufficient here.

At the solicitations of the governments themselves of the confederation and Uruguay, the commission of Pereira Pinto had been formed. At the same time that those solicitations were urged here, the arming of Martin Garcia was going forward, and the Argentine war-vessels in Montevideo were preparing for the conflict. The armament of the island proved difficult, and so its neutralization was practically effected. Thus the passage of the ships was facilitated.

If the imperial government had not feared being unjust in its appreciation of the facts, it might have considered those solicitations in relation not to the transit of merchant-vessels, but to the Argentine war-ships. It wished, however, to be just, and so, attending to the general interests of navigation, it counseled the neutralization of the island.

Giving, however, that counsel, which amounted to the abandonment of a means of defense, it could not fail to attend to the just demand of a guarantee which should substitute it, and expressed the hope that it would be conceded.

Events were precipitated, and the Argentine ships, then confined to the waters limited by the island, made use of the Oriental ports as the base of their military operations, and committed hostilities in Buenos Ayres. From this sprung the resolution that the government of that province (Buenos Ayres) took, of ordering its squadron to [Page 79] the port of Montevideo, and the intimations there made, on the 24th of August, by the officer in command.

These events, all foreign to the will and action of the two agents of Brazil, made their positions difficult, endangering the issue of the commission intrusted to one, and creating conflicts in the territory where the other was accredited.

Senhor Pereira Pinto, learning what had occurred in Montevideo, and considering the assurances which the government of Buenos Ayres had given of its pacific intentions in regard to the Oriental State, judged it proper to have an understanding at once with the minister for foreign affairs, and on that occasion he was informed of the resolution which had been taken to order the squadron to return to that port (Montevideo) for the purpose of making fresh intimations.

In that conference he did all in his power to prevent hostilities being carried on in the port of Montevideo and its neighborhood, and only succeeded in obtaining a modification of the instructions given to the commander of the squadron.

At the same time he referred to the neutralization of the island, which was the business with which he had been charged, simultaneously with that of manifestations to be made in favor of the Oriental state. The result was the note which the minister of foreign affairs (of Buenos Ayres) sent him on the 27th of August, imposing certain conditions preliminary to the neutralization.

The consul-general of Brazil, however, did not compromit himself in regard to the two squadrons, as appears in the note passed to the government of Buenos Ayres, under date of the 3d of September.

It being necessary that the Brazilian minister in Montevideo should be informed at once of the resolution to which the government of Buenos Ayres had come, Senhor Pereira Pinto decided to go to that capital; and so he did, not only for the object mentioned, but also to make such representations as might prevent the Oriental government from giving to the other (Buenos Ayres) just motives of complaint in the observance of its neutrality.

The agreement of the 31st of August (1859) dissipated the conflict which was feared, and secured advantage for neutral interest which might have been prejudiced.

The neutralization of the island, however, was not effected; but peace now being concluded by virtue of the agreement of the 10th November, it is to be hoped that a practical re-union of Buenos Ayres with the other provinces of the confederation will soon be brought about, when all further doubts in regard to that object will have been removed.

[Inclosure 6 in No. 148.]

Translation of certain parts of the report of the Brazilian minister for foreign affairs for 1864, relating to the island of Martin Garcia, page 6. Principles and understanding of the conditions under which the island of Martin Garcia should be held.

The reclamation was based upon the dispositions of the Articles XVIII of the treaties of the 12th October, 1851, and of the 7th of March, 1856, between the three states.

In the first of these, the high contracting parties recognize that the said island could embarrass and impede the free navigation of the confluents of the river Plate, in which are interested all the Riverine States, and that it was desirable to preserve the neutrality of that island in time of war, whether carried on between the Platine States, or between, one of them and any other power, and this for the common good, as wellas the guarantee of the navigation of the said rivers.

The same guarantee was extended (tor muse entensiva) by the treaties of San Jose de Mores, of 10th of July, 1853, to France, England, and the United States.

The stipulations to which I have just alluded had for their object, without prejudicing the question of dominion and sovereignty, which was still to be settled exclusively between the Platine States, to secure, so far as it was possible to do so, the neutralization of the island of Martin Garcia and prevent it from being occupied by any one of them, thus impeding the navigation of that river and of its confluents, already declared free by the most solemn treaties.

The armament of this island has neither been prevented nor permitted; there was only one voice and one agreement between the contracting parties, to obtain from that one which should be in possession of the island the consent to its neutralization in time of war.

This subject was discussed for the first time formally in 1859, when the province of Buenos Ayres, at variance with the Argentine Confederation and the republic of Uruguay, armed and fortified the island of Martin Garcia, with the manifest intention of making it the base of its military operations.

The governments of the Confederation and Uruguay, giving to this fact an international importance which it did not have, demanded of the imperial government that it [Page 80] should interfere for the disarmament of the island, and that it should employ even force if her protest was not heeded.

While the imperial government could not judge itself authorized, by virtue of existing treaties, to oblige Buenos Ayres to disarm and disoccupy Martin Garcia, since the obligation she had contracted by those international acts did not go so far, (pois que a tanto naõ se elevaváo os effeitos dos * * * * * ,) nevertheless, duly appreciating its importance, and recoguizing that the said armament might draw to that point hostilities which could endanger the navigation and commerce of neutrals, she sought by all persuasive means to convince the government of Buenos Ayres of the advantages of its neutralization.

But this negotiation had no result. Then followed the convention of peace of November 11, 1859. The Argentine Republic was re-organized, and maintained the right to occupy and arm the island without any other limitation than (sem nenhum outro correctivo mais to que * * *) to make it entirely inoffensive to the free navigation of the rivers Uruguay and Parana.

In the opinion of the minister of foreign affairs of Uruguay, the position which has been lately taken by the Argentine government amounts to a standing threat against that republic, having for its natural effect to weaken the efforts which the legal government was making to suppress the revolution, and indirectly to render to the rebels powerful aid to the prejudice of its sovereignty and independence.

Taking into consideration the reclamation directed by that minister to the imperial legation in Montevideo, the imperial government did not hesitate to conform once in ore with the wishes of the Oriental government, soliciting explanations from the government of the Argentine Republic in regard to the matter.

It did not demand, however, nor could it demand (exigir) from that government the disarming of the island, the conditions of which were still to be regulated by common agreement between the Riverine States and the powers which signed the treaties of July 10, 1853.

In the interest of peace, and to prevent complications which could result from the armament to the Argentine government itself, the imperial government urged the propriety of removing this further element of discord from the conflicts unhappily so frequent in the Plate.

The intervention, by its good orifices, of His Imperial Majesty’s government in this instance seems to have been successful, resulting in the assurance given by the minister of foreign relations of the Argentine Republic in the conferences which the Brazilian minister in Buenos Ayres had with his excellency, that it was not the intention of his government to make any attempts against the sovereignty and independence of the neighboring state, nor obstruct free navigation and foreign commerce by the coercive measures which had been adopted to obtain from that state reparation for attacks made upon the Argentine nation, a matter still awaiting a friendly solution.

These measures, in the meanwhile, have not had the consequences which the government of Uruguay so much feared; the island of Martin Garcia in fact remains unarmed.

  1. Inclosure 2 is a translation of note on Article XVIII, and its meaning is to be found at page 329 of vol. iii of Pereira Pinto’s “Apontamento Para o dirieto Internacioual.”
  2. Of Brazilian minister of foreign affairs, vide translation of passage in Annex F of this dispatch.
  3. The aim of this treaty, negotiated by Messrs. Schenck and Pendleton on behalf of the United States was to determine the conditions of the free navigation of the rivers and remove the obstacles which had previously impeded it.