Mr. SAMUEL HALL a teacher in Marietta College, Ohio, gives, in a late letter, the following statement of a fellow student, from Kentucky, of whom he says, "he is a professor of religion, and worthy of entire confidence." "I have seen at least _fifteen_ droves of 'human cattle,' passing by us on their way to the south; and I do not recollect an exception, where there were not more or less of them _chained_ together." Mr. GEORGE P.C. HUSSEY, of Fayetteville, Franklin county, Pennsylvania, writes thus: "I was born and raised in Hagerstown, Washington county, Maryland, where slavery is perhaps milder than in any other part of the slave states; and yet I have seen _hundreds_ of colored men and women chained together, two by two, and driven to the south. I have seen slaves tied up and lashed till the blood ran down to their heels." Mr. GIDDINGS, member of Congress from Ohio, in his speech in the House of Representatives, Feb. 13, 1839, made the following statement: "On the beautiful avenue in front of the Capitol, members of Congress, during this session, have been compelled to turn aside from their path, to permit a coffle of slaves, males and females, _chained to each other by their necks_, to pass on their way to this _national slave market_." Testimony of JAMES K. PAULDING, Esq. the present Secretary of the United States' Navy. In 1817, Mr. Paulding published a work, entitled 'Letters from the South, written during an excursion in the summer of 1816.' In the first volume of that work, page 128, Mr. P. gives the following description: