Cil»CIiftr1clt;wStnt the example.The fleta.is ofan outrage committee] by a party of Fox Indians upon a number of Meuomonies at Prairie du Chieu, while encamped under the protection of our Hu#, will be found in the report of the officer having- charge of the bureau of Indian Affairs. The alleged motive tor this wanton aggression was some previous injury of a similar nature, stated to have been committed by the Me* nomonies upon the Fox Indians—a justification, which can never be wanting, where neither time nor treatie.% as j n; in this case, are permitted to cancel the offence. . s»This aggression, together with the difficulties at R ck \ tl Island wuh the Sac Indians, of which the same report J tl furnishes the particulars, shows the necessity of employ- J si ing upon the frontiers a corps of mounted men, to be sta- 1 Iy tioneu at the most exposed points, and to be always pro- j ppared to follow every party, that may attempt to inter- I ai nipt the peace of the border bv attacking either onrciti- 1 alt; zeus or other Indians. These predatory bands strike a t o; stroke, and disappear. And there is in the institutions '• ti of the Indians, such a strong tendency to war, that we ai ahull long he liable to these outrages. Military prowess q and success form their principal road to distinction. And ; e the interminable forests and prairies of the West offer j li them the mean9 of shelter and escape. No infantry force ; o, can expect to overtake them; and if we are not provided with mounted troops,who can prevent or punish these aggressions, we shall frequently be compelled to adopt measures more expensive and inconvenient to us, ami more injurious to the Indians.Very respectfully, s;r, I have the honor to be.Your obedient servant.I.KWIS CASS.*I*o the PnEsiD£.YT of the United States.tlItdterlt;a;11IV