Whilst I thank you for the courtesy of delivering my letter, as requested, I must be permitted to express to you my disappointment at the course which you have prescribed to yourself, of refraining from expressing any opinion to the Moorish Government, of the legality or illegality of its act, lest you should be charged with undue interference.

I had supposed that the “Trent affair,” of so recent occurrence, had settled, not only the right, but the duty of the civilized nations of the earth to “interfere,” in a friendly manner, to prevent wars between nations. It cannot have escaped your observation, that the course pursued by Europe in that affair, is precisely analogous to that which I have requested of you. In that affair a quarrel arose between the United States, one of the belligerents in the existing war, and Great Britain, a neutral in that war; and instead of “refraining” from offering advice, all Europe made haste to volunteer it to both parties. The United States were told by France, by Russia, by Spain, and other Powers, that their act was illegal, and that they could, without a sacrifice of honor, grant the reparation demanded by Great Britain. Neither the nation giving the advice nor the nation advised, supposed for a moment that there was a breach of neutrality in this proceeding; on the contrary, it was the general verdict of mankind, that the course pursued was not only legal, but eminently humane and proper, as tending to allay excitement, and prevent the effusion of blood.

If you will run a parallel between the Trent case, and the case in hand, you will find it difficult, I think, to sustain the reason you have assigned for your forbearance. In that case, the quarrel was between a neutral, and a belligerent, as in this case. In that case, citizens of a belligerent State were unlawfully arrested on the high seas, in a neutral ship, by the opposite belligerent, and imprisoned. In this case, citizens of a belligerent State have been unlawfully arrested by a neutral, in neutral territory, and imprisoned. Does the fact that the offence was committed in the former case, by a belligerent against a neutral, and in the latter case, by a neutral against a belligerent, make any difference in the application of the principle we are discussing? And if so, in what does the difference consist? If A strikes B, is it lawful to interfere to preserve the peace, and if B strikes A, is it unlawful to interfere for the same purpose? Can the circumstance, that the prisoners seized by the one belligerent, in the Trent affair, were citizens of the other belligerent, alter the application of the principle? The difference, if any, is in favor of the present case, for whilst the belligerent in the former case was compelled to release its enemies, whom, under proper conditions it would have had the right to capture, in the latter case I requested you to advise a neutral to release prisoners, who were not the enemies of the neutral, and whom the neutral could have no right to capture under any circumstances whatever.

Upon further inquiry, I learn that my first impression, that the two gentlemen in question had been arrested under some claim of extradition, was not exactly correct. It seems that they were arrested by Moorish soldiery, upon the requisition of the United States Consul, who claimed to exercise jurisdiction over them, as citizens of the United States, under a provision of a treaty common between what are called the non-civilized and the civilized nations. This state of facts does not alter, in any degree, the reasoning applicable to the case. If Morocco adopts the status given to the Confederate States by Europe, she must remain neutral between the two belligerents, not undertaking to judge of the nationality of the citizens of either of them, or to decide any other question growing out of the war, which does not concern her own interests. She has no right, therefore, to adjudge a citizen of the Confederate States, to be a citizen of the United States; and not having this right, herself, she cannot convey it by treaty to the United States, to be exercised by their Consul in Tangier.

I trust that you will not understand, that I have written in a tone of remonstrance, or complaint. I have no ground on which to demand anything of you. The friendly offices of nations, like those of individuals, must be spontaneous; and if in the present instance, you have not deemed yourself at liberty to offer a word of friendly advice, to a Barbarian Government which has evidently erred through ignorance of its rights and duties, in favor of unfortunate citizens of a Government, in amity with your own, and whose people are connected with your people by so many ties of consanguinity and interest, I have no word of remonstrance to offer. You are the best judge of your own actions.

I never received any reply to this letter from Mr. Hay. The fact that the prisoners were permitted to be delivered up to the enemy, as before stated, is conclusive that he was as good as his word, and “signified distinctly” to the Moorish Government, that he should refrain from giving it any advice on the subject—which, of course, under the circumstances, was tantamount to advising it to do what it did. If he had contented himself with handing in my protest to the Moorish authorities, without any remark whatever, his conduct would not have been so objectionable, but when he made it a point to inform them, as he took pains to tell me he would, that he had no advice to offer them, this was saying to them in effect, “I have no objection to offer to your course;” for it must be borne in mind, that Mr. Hay was a great favorite with the Government to which he was accredited, and was in the constant habit of giving it advice on every and all occasions. The consuls of the different powers resident in Tangier behaved no better than Mr. Hay. A serious commotion among the Christian residents took place, upon the arrest and imprisonment of Messrs. Myers and Tunstall, which would probably have resulted in their release by the Government, but for the interference of these consuls, headed by Mr. Hay. They advised their respective countrymen to disperse, and “refraining distinctly,” each and all of them, from giving a word of advice to the perplexed authorities, though implored by the Moors themselves to do so, the latter construed the whole course of Hay and the consuls to mean, that they must comply with the Federal Consul’s demand, and hand over the prisoners to him.

The news of this arrest and imprisonment created great excitement in most of the Christian capitals, particularly in London. A formal call was made in the British Parliament, upon the Under Secretary for Foreign Affairs, for an official statement of the facts; but it being rumored and believed, soon afterward, in London, that the prisoners had been released, no steps were taken by the British Government, if any were contemplated, until it was too late. Mr. Mason, our Commissioner in London, interested himself at once in the matter, but was deceived like the rest, by the rumor. The following extract from a letter written by me to him on the 19th of March will show how the British Government had been bamboozled by some one, although there was a continuous line of telegraph between London and Gibraltar:—

“I have had the honor to receive your letter of the 8th inst. informing me that, as late as the 7th of March, the English Government was under the impression that Paymaster Myers and Mr. Tunstall, had been released from imprisonment; and requesting me to telegraph you, if the contrary should be the fact. This lack of information on the part of the Under Secretary of State is somewhat remarkable, as no rumor has prevailed here, at any time, that these gentlemen had been liberated. On the contrary, the sloop-of-war Ino, of the enemy, came into this Bay—Spanish side—on the 28th of February, with the prisoners on board, and sailed with them the next day. On the 6th of March, the Ino transferred the prisoners to the enemy’s merchant-ship, Harvest Home, off Cadiz, which sailed immediately for Boston. You will perceive, from the narration of these facts, that it was unnecessary to telegraph to you, as the prisoners, though they had not been released, had been placed beyond the reach of the British Government through its Chargé at Tangier—even if you could have induced that Government to interfere, which I very much doubt.

“You have, of course, been informed through the press, that the Moorish Government was anxious to liberate the prisoners, but that it was bullied into acquiescence, by the truculent Federal Consul, who was backed by a force of forty armed men, landed from the Ino, and who threatened to haul down his flag, and quit the country, if his demand was not complied with. A word of advice given, unofficially even, by Mr. Hay, or some one of the consuls present, would have been an act of kindness to the ignorant Moors, in keeping them out of a scrape, as well as to ourselves. As the case now stands, we shall be obliged, as soon as we shall have gotten rid of this Yankee war, to settle accounts with his Majesty of Morocco.”

One more letter, and the reader will have full information of this Tangier difficulty. Myers and Tunstall had embarked, as has been stated, under the French flag, and I wrote to Mr. Slidell in Paris, requesting him to call the attention of the French Government to this fact. Having received from him in reply a note informing me that he had done so, I wrote him again as follows:—