The Service Building, No. 28.—Near the Reptile House, and at the geographical center of the enclosed grounds, is situated a building which contains the Bureau of Administration of the Zoological Park. Here will be found the offices of the Chief Clerk, several other Park officers, and the workshops and storerooms. Children lost in the Park, and property lost or found, should be reported without delay at the Chief Clerk’s office in this building. The telephone call of the Zoological Park is 953 Tremont. Wheeled Chairs.—By persons desiring them, wheeled chairs can always be obtained at the entrances, by applying to gatekeepers, or at the office of the Chief Clerk, in the Service Building. The cost is 25 cents per hour; with an attendant, 50 cents per hour. Arrangement of Collections.—Inasmuch as the physical features of the Zoological Park grounds were important factors in locating the various collections of animals, a perfect zoological arrangement was impossible. The existing plan represents the limit of acceptable possibilities in grouping related animals. [Illustration: BOATING ON BRONX LAKE.] The entire southern and western sides of the Park are exclusively devoted to the Hoofed Animals, in addition to which other members of that Order will be found at the Elephant and Small-Mammal Houses. The Carnivorous Animals will be found at the Lion House, Wolf and Fox Dens, Small-Mammal House and Bear Dens. The Birds are in two groups; one in the lower end of Bird Valley, and the Large Bird-House on Baird Court; the other around the Wild-Fowl Pond, south of the Wolf Dens. The existence of six entrances to the Park renders it impossible to lay out an all-embracing “tour” for the visitor, and develop the Guide Book accordingly. The various collections will be handled in zoological groups, but the various groups cannot follow each other in zoological sequence. The table of contents and a comprehensive index will render each item of the subject matter quickly available. PHYSICAL ASPECT OF THE GROUNDS. The extreme length of the Park from north to south is 4,950 feet, or 330 feet less than one mile; and its extreme width is 3,120 feet, or three-fifths of a mile. Roughly estimated, one-third of the land area is covered by heavy forest, one-third by open forest, and the remaining third consists of open meadows and glades. The highest point of land in the Park is the crest of Rocking Stone Hill, the elevation of which is 94.8 feet above sea level.