I herewith transmit, for the consideration of the Senate with a view to its ratification, a convention between the United States of America and the United States of Mexico, touching the boundary line between the two countries where it follows the bed of the Rio Grande and the Rio Gila, concluded November 12, 1884, and add that the convention is in accordance with an opinion of the Hon. Caleb Cushing, Attorney-General, dated November 11, 1856. (See Opinions of Attorneys-General, Vol. XIII, p. 175, "Arcifinious boundaries.") CHESTER A. ARTHUR. EXECUTIVE MANSION, _Washington, December 4, 1884_. _To the Senate and House of Representatives:_ I transmit herewith a communication from the Secretary of State, submitting the text, in the English and French languages, of the proceedings of the International Meridian Conference, provided for by the act of Congress approved August 3, 1882, held at Washington during the month of October, 1884. CHESTER A. ARTHUR. EXECUTIVE MANSION, _Washington, December 9, 1884_. _To the Senate of the United States:_ I herewith transmit, for the consideration of the Senate with a view to its ratification, a supplementary convention to limit the duration of the convention respecting commercial reciprocity between the United States of America and the Hawaiian Kingdom, concluded January 30, 1875. CHESTER A. ARTHUR. EXECUTIVE MANSION, _Washington, December 9, 1884_. _To the Senate of the United States:_ I transmit herewith, for the consideration of the Senate with a view to obtaining its advice thereon and consent thereto, a convention for commercial reciprocity between the United States and the Dominican Republic, which was signed in this capital on the 4th instant. This convention aims to carry out the principles which, as explained in my last annual message to the Congress, should, it is conceived, control all commercial arrangements entered into with our neighbors of the American system with whom trade must be conducted by sea. Santo Domingo is the first of the independent Republics of the Western Hemisphere with which an engagement of this character has been concluded, and the precedent now set will command your fullest attention as affecting like future negotiations. CHESTER A. ARTHUR. EXECUTIVE MANSION, _Washington, December 10, 1884_. _To the Senate of the United States:_ I transmit herewith, for consideration by the Senate with a view to advising and consenting to its ratification, a convention for commercial reciprocity between the United States and Spain, providing for an intimate and favored exchange of products with the islands of Cuba and Puerto Rico, which convention was signed at Madrid on the 18th ultimo.