The very important building called the Small-Deer House has been erected with special reference to the wants of the interesting little hoofed animals which are too small for the Antelope House and the large ranges. In winter it will shelter the small tropical mountain sheep and goats, which are unable to withstand the rigors of outdoor life on Mountain Sheep Hill, and the tropical swine may also be expected here. The Small-Deer House is situated in close proximity to the Antelope House, and westward thereof. Of the buildings of secondary rank, it is one of the most satisfactory, being roomy, well-lighted and capable of comfortably housing and displaying a large and varied collection. The structure is 158 feet in length by 46 feet in width. It contains thirty compartments, each of which, under stress of necessity, can be partitioned, and formed into two. The interior compartments are each 10 feet wide by 10 feet deep. The building is surrounded by a series of 34 corrals, connecting with the interior compartments, the average size of each being 75 feet long by 20 feet wide at the outer end. All the fences are of wire, and were specially designed in the Park for this installation. [Illustration: SABLE ANTELOPE.] It is a practical impossibility to offer an enumeration of the living animals in this building which will permanently apply, and the best that can be attempted is an approximation. It is an inexorable law of Nature that the smallest animals shall have the shortest periods of life, and in a zoological park a small hoofed animal may be here to-day and gone to-morrow. In the following enumeration, mention will be made only of those species which are likely to remain longest on exhibition; and it may be observed that in this building there will be found various animals which are neither deer nor antelopes. The Small Deer. Osceola White-Tailed Deer, (_Odocoileus virginianus osceola_), is an interesting geographic race of the northern White-Tailed Deer which forms the parent stem of a group of six or seven subspecies. The robust and hardy northern type, often with large and strong antlers, gradually diminishes in size and in antlers, until in Mexico it becomes a small and delicate creature, with very small and light antlers bearing only two or three small tines. The next form has so widely diverged from the original type that it is necessary to accord it rank as a full species. [Illustration: REDUNCA ANTELOPE.] The Sinaloa White-Tailed Deer, (_Odocoileus sinaloae_), is still smaller and weaker than the preceding. Our pair of specimens shown was obtained by Mr. and Mrs. C. William Beebe, in the State of Guadalajara, Mexico, and are highly interesting as a link near the lower terminus of the _Odocoileus_ chain. On a majority of the antlers of this species there are no branches whatever, but simply a weak main beam, curving over at the tip, and terminating in a rounded point.