88 HAND-BOOK OP WASHINGTON. seldom subject to these diseases. The magnificent distances of the city have often been ridiculed, but the broad streets and avenues are undoubtedly of great service in admitting to every dwelling a free circulation of wholesome air, which, with good water, may be considered invaluable blessings. SPECIFIC DUTIES OF EXECUTIVE OFFICERS. With a view of facilitating the views of persons visiting Washington on business, we think it proper to mention the executive officers and to specify their several duties. DEPARTMENT OP STATE. The whole machinery employed to conduct the business arising out of our foreign relations with all the powers of the world is far more simple than is generally conceived. The number em ployed in the Department of State of the United States is only seventeen, as follows: One Secre tary of State, one Assistant Secretary of State, one chief clerk, twelve clerks, one translator, and one librarian. Diplomatic Branch. — This Branch of the State Department has charge of all correspond ence between the department and all diplomatic