In the afternoon my wife and myself went to take tea with the coloured minister. His dwelling, though small and humble, was neat and clean. With his intelligence and general information we were quite delighted. He spoke with feeling of the gross insults to which the coloured people, even in this free State, are exposed. When they travel by railway, though they pay the same fare as other people, they are generally put in the luggage-van! He had himself, when on board of steam-boats, often been sent to the "pantry" to eat his food. Nor will the white people employ them but in the most menial offices; so that it is nearly impossible for them to rise to affluence and horse-and-gig respectability. The consequence is that they are deeply and justly disaffected towards the American people and the American laws. They clearly understand that England is their friend. For one month all the free coloured people wore crape as mourning for Thomas Clarkson. LETTER XX. Stay at Cincinnati (continued)--The New Roman Catholic Cathedral--The Rev. C. B. Boynton and Congregationalism--"The Herald of a New Era"--American Nationality. A lady, belonging to the Presbyterian Church at which I preached, kindly sent her carriage to take us about to see the city. We visited the new Roman Catholic Cathedral, one of the principal "lions." It was begun in 1841, and, though used for public worship, is not yet finished. The building is a parallelogram of 200 feet long by 80 feet wide, and is 58 feet from the floor to the ceiling. The roof is partly supported by the side walls, and partly by two rows of freestone columns--nine in each row--at a distance of about 11 feet from the wall inside. These columns are of the Corinthian Order, and are 35 feet high, and 3 feet 6 inches in diameter. There is no gallery, except at one end, for the organ, which cost 5,400 dollars, or about 1,100_l._ sterling. The floor of the building is furnished with a centre aisle of 6 feet wide, and two other aisles, each 11 feet wide, along the side walls, for processional purposes. The remainder of the area is formed into 140 pews, 10 feet deep. Each pew will accommodate with comfort only six persons; so that this immense edifice affords sitting room for no more than 840 people! It is a magnificent structure, displaying in all its proportions a remarkable degree of elegance and taste. The tower, when finished, will present an elevation of 200 feet, with a portico of twelve Corinthian columns, six in front and three on either side, on the model of the Tower of the Wind at Athens. The entire building will be Grecian in all its parts. One-fourth of the population of Cincinnati are Roman Catholics. They have lately discontinued the use of public government-schools for their children, and have established some of their own, I am not so much alarmed at the progress of Popery in America as I was before I visited that country. Its proselytes are exceedingly few. Its supporters consist chiefly of the