But I have not yet adduced all the testimony of Mr. Foote. Last year, on the 23d of February, 1849, he declared: "No one acquainted with the vast mineral resources of California and New Mexico, and who is aware of the peculiar adaptedness of slave labor to the development of mineral treasures, can doubt for a moment, that were slaves introduced into California and New Mexico, being employed in the mining operations there in progress, their labor would result in the acquisition of pecuniary profits not heretofore realized by the most successful cotton or sugar planter of this country?" Does not Mr. Webster know this? Perhaps he did not hear Mr. Foote's speech last year; perhaps he has a short memory, and has forgotten it. Then let us remind the nation of what its Senator forgets. Not know this--forget it? Who will credit such a statement? Mr. Webster is not an obscure clergyman, busy with far different things, but the foremost politician of the United States. But why do I mention the speeches of Mr. Foote, a year ago? Here is something hardly dry from the printing-press. Here is an advertisement from the "Mississippian" of March 7th, 1850, the very day of that speech. The "Mississippian" is published at the city of Jackson, in Mississippi. "CALIFORNIA, "THE SOUTHERN SLAVE COLONY. "Citizens of the slave States, desirous of emigrating to California with their slave property, are requested to send their names, number of slaves, and period of contemplated departure, to the address of 'SOUTHERN SLAVE COLONY,' Jackson, Miss.... "It is the desire of the friends of this enterprise to settle in the richest mining and agricultural portions of California, and to have the uninterrupted enjoyment of slave property. It is estimated that, by the first of May next, the members of this Slave Colony will amount to about five thousand, and the slaves to about ten thousand. The mode of effecting organization, &c., will be privately transmitted to actual members. "Jackson (Miss.), Feb. 24, 1850. "dtf. What does Mr. Webster say in view of all this? "If a proposition were now here for a government for New Mexico, and it was moved to insert a provision for the prohibition of slavery, I would not vote for it." Why not vote for it? There is a specious pretence, which is publicly proclaimed, but there is a real reason for it which is not mentioned! In the face of all these facts, Mr. Webster says that these men would wish "to protect the everlasting snows of Canada from the pest of slavery by the same overspreading wing of an act of Congress." Exactly so. If we ever annex Labrador--if we "re-annex" Greenland, and Kamskatka, I would extend the Wilmot Proviso there, and exclude slavery forever and forever.