A member of Congress from New York, (Mr. Gates) bears testimony to trie progresa of our cause in a late letter to the Oberlin Evangelist : - "Your late remarke on the progresa of the sJavery cause,' were titnely and true. I have now for yeara narrowly watched the progress of events, and the Providence of God in respect to Am. Savery, from the elévate á point of observatioD, and I have not a lingering doubt, that this infernal system must soorr ! come to an end . The exact procew by which it is finally to be accomplished, I am not sonnguine as to suppose I can farsee; but the nornl power of the civilized world, and the nost marked P'rovidences of the Most High, ire beaiing down upon it with irresistible forcé! Whether it be the Lynch Law of the South orthe Gag Law of Congress- tbe unrighteous and retaliatory enactments of Southern, or the Eubservient and black enactments of Northern Legislatures- the escape of the Atni&tad 01 the insurrection of the Creóle Cap ti ves- the murder of a Lovejoy or the imprtsonmer.t of a Torrey - the nttempted expulsión ofan Adams, or the censure of a Giddings- all, all things tend to exposé the eüormity, i weaken the power, and haslen the overihrote' oj slavery. The escape of a Clark into Ohio, sendB an eloquent missionary from Ashland I over the free states, making hundreds of converts to Abolition; anti the arrest of a Latimer in Massachuselts, rocks the oíd 'eradle of liberty,' and sends up a peiition to an ex-president in Congress with 50,000 names upon it, demanding to be relievod from all paticipatiorf the sin and shame of slavery !