OF 1. REPUBLICS'IMPRESSIVE CEREMONY PRE8ID MED OVER BY SECRETARY ROOT, AND AT WHICH PRESIDENTROOSEVELT IS CHIEF SPEAKER.WASHINGTON, May 11.—Tho new international headquarters of the 21 American republics began to take definite shape this afternoon, when the cornerstone of the new building of the International Bureau of American Republics was laid. The event was observed with ceremonies indicative of the importance of this magnificent million dollar structure, for the useof all the American republics, itsJoint owners.,Addresses were made by President Roosevelt, who has -taken a deep interest in the promotion of commerce and good will among the republics; by Secretary Root, who has done more by his visits to South America and Mexico to enhunce the good relationship of the United States with I^atln America than a|iy other man who has served as headj of the siate department; by Senor Joaquin Nabucco, the ambassador oft Brazil, dean of the Latin America^ diplomatic corps in Washington, o/id by Andrew Carnegie, Who was a delegate to the first Pan-American conference in Washington in the winter of 1889-90 when the International bureau was organized, and who has given $760,000 for the erection of this new home for the institution.Cardinal Gibbons, head of the Roman Catholic church in the United States, pronounced the Invocation andthe benediction was offered by Bishop Cranston, dean of the Protestant clergy of the District of Columbia. Director John Barrett, of the International bureau, presided, and Appropriate Pan-American music was provided by the Marine baud.After referring to the occasion and to Mr. Carnegie's gift which makes the building possible and describing the organization and work of the bureau, Mr. Hoot, who presided, said in part: