Captain Gray, commanding the ship "Columbia," of Boston, Mass., discovered the noble river in 1791, which he named after his ship.

First Columbia Tour: Portland to "The Dalles," by rail, and return by river.

Second Columbia Tour: Portland to Astoria, Ilwaco, and Clatsop Beach, and return by river.

Fourth Columbia Tour: Portland to Alaska and return.

Fifth Columbia Tour: Portland to San Francisco by boat.

The gorge of the Columbia, which in many respects equals, and in others surpasses the far-famed Yosemite, may be visited in the compass of a day.

Beginning first with the Columbia River, the traveler will find solid comfort on any one of the boats belonging to the Union Pacific Railway fleet.

The Dalles proper of the Columbia begin at Celilo, fourteen miles above this point, and are simply a succession of rapids, until, nearing The Dalles Station, the stream for two and a half miles narrows down between walls of basaltic rock 130 feet across.

THE MIDDLE COLUMBIA.

On a clear day, one may enjoy at the junction of the Willamette with the Columbia a very wonderful sightfive mountain peaks are on view: St. Helens, Mt. Jefferson, Mt. Adams, Mt. Hood, and Mt. Rainier.

The boats of the Union Pacific Ry. on the Columbia leave nothing to be desired.

To the House of Representatives of the United States: In compliance with the resolution of the House of Representatives of the 16th instant, relative to an attack on the steamboat Columbia in the Gulf of Mexico by a Mexican armed vessel, I transmit a report from the Secretary of State, to whom the resolution was referred.

"March 5,1830, Mr. Washington presented a memorial of inhabitants of the county of Frederick, in the state of Maryland, praying that provision be made for the gradual abolition of slavery in the District of Columbia."

Mr. A.H. Shepperd, of North Carolina, presented a memorial of citizens of that state, "praying Congress to take measures for the entire abolition of slavery in the District of Columbia.

Mr. Rhea, of Tennessee, presented a memorial of citizens of that state, praying that "provision may be made, whereby all slaves that may hereafter be born in the District of Columbia, shall be free at a certain period of their lives."

"Mr. Barnard presented the memorial of the American Convention for promoting the abolition of slavery, held in Baltimore, praying that slavery may be abolished in the District of Columbia.

Produce a bill to emancipate the slaves in the District of Columbia, or, if you prefer it, to emancipate those born hereafter.

In a speech before the U.S. Senate, February 1, 1820, (National Intelligencer, April 29, 1829,) he says: "In the District of Columbia, containing a population of 30,000 souls, and probably as many slaves as the whole territory of Missouri, THE POWER OF PROVIDING FOR THEIR EMANCIPATION RESTS WITH CONGRESS ALONE.

Why then, this heart-rending sympathy for the slaves of Missouri, and this cold insensibility, this eternal apathy, towards the slaves in the District of Columbia?

President Van Buren in his letter of March 6, 1836, to a committee of Gentlemen in North Carolina, says, "I would not, from the light now before me, feel myself safe in pronouncing that Congress does not possess the power of abolishing slavery in the District of Columbia."

" ] The tenor of Mr. Tallmadge's speech on the right of petition, and of Mr. Webster's on the reception of abolition memorials, may be taken as universal exponents of the sentiments of northern statesmen as to the power of Congress to abolish slavery in the District of Columbia.

"He replied to the remark that the report conceded that Congress had a right to legislate upon the subject in the District of Columbia, and said that SUCH A RIGHT HAD NEVER BEEN, TILL RECENTLY, DENIED.

" The American Quarterly Review, published at Philadelphia, with a large circulation and list of contributors in the slave states, holds the following language in the September No. 1833, p. 55: "Under this 'exclusive jurisdiction,' granted by the constitution, Congress has power to abolish slavery and the slave trade in the District of Columbia.

"Dear Brother,In conversation with Judge Lyman, of Litchfield county, Connecticut, last June, he stated to me, that several years since he was in Columbia, South Carolina, and observing a colored man lying on the floor of a blacksmith's shop, as he was passing it, his curiosity led him in.

He says they aim at other objects than those they professemancipation in the District of Columbia.