The summons of the Texian committee of New Orleans to their fellow-citizens was enthusiastically responded to. At the appointed hour, the immense Arcade Coffeehouse was thronged to the roof, speeches in favour of Texian liberty were made and applauded to the echo; and two lists were opened--one for subscriptions, the other for the names of those who were willing to lend the aid of their arms to their oppressed fellow-countrymen. Before the meeting separated, ten thousand dollars were subscribed, and on the following afternoon, the steamer Washita ascended the Mississippi with the first company of volunteers. These had ransacked the tailors' shops for grey clothing, such being the colour best suited to the prairie, and thence they received the name of "The Greys;" their arms were rifles, pistols, and the far-famed bowie-knife. The day after their departure, a second company of Greys set sail, but went round by sea to the Texian coast; and the third instalment of these ready volunteers was the company of Tampico Blues, who took ship for the port of Tampico. The three companies consisted of Americans, English, French, and several Germans. Six of the latter nation were to be found in the ranks of the Greys; and one of them, a Prussian, of the name of Ehrenberg, who appears to have been for some time an inhabitant of the United States, and to be well acquainted with the country, its people, their language and peculiarities, survived, in one instance by a seeming miracle, the many desperate fights and bloody massacres that occurred during the short but severe conflict for Texian independence, in which nearly the whole of his comrades were slain. He has recently published an account of the campaign; and his narrative, highly characteristic and circumstantial, derives a peculiar interest from his details of the defeats suffered by the Texians, before they could succeed in shaking off the Mexican yoke. Of their victories, and especially of the crowning one at San Jacinto, various accounts have already appeared; but the history of their reverses, although not less interesting, is far less known; for the simple reason, that the Mexicans gave no quarter to those whom they styled rebels, and that the defeat of a body of Texians was almost invariably followed by its extermination.