The North Hall, or that portion of the building situated to the northward of the principal staircase, is used for the exhibition of the more important breeds of Domesticated Animals, as well as of examples of Hybrids and other Abnormalities. A series of specimens illustrative of Economic Zoology is likewise temporarily placed here. The examples of Domesticated Mammals include Horses, Cattle, Sheep, Goats, Llamas, Dogs, Cats, and Rabbits. One of the main objects of this series is to show the leading characteristics of the well-established breeds, both British and foreign. In addition to Domesticated Animals properly so called, there are also exhibited examples of what may be termed Semi-domesticated Animals, such as white or parti-coloured Rats and Mice. The skulls and skeletons of celebrated Horses[7] of all breeds, including those of the Thoroughbreds “Persimmon” (presented by His Majesty King Edward VII.), “Stockwell,” “Bend Or,” and “Ormonde,” and of the Shire “Blaisdon Conqueror,” form a notable feature of the series. In another case is exhibited the dentition of the Horse at different periods of existence; while on the opposite side of the same is illustrated the evolution of the Horse from three-toed and four-toed ancestors, and also certain peculiarities distinguishing the skulls of Thoroughbreds and Arabs from those of most other breeds. Among the more notable exhibits are a mounted specimen of a Spanish Fighting Bull, which belongs to an altogether peculiar breed, and heads of Spanish Draught Cattle, presented by H.M. King Edward VII. Among the Sheep, attention may be directed to the four-horned, fat-tailed, and fat-rumped breeds, and also to the small breed from the island of Soa, as well as the curious spiral horned Wallachian Sheep. The so-called wild cattle of Chillingham Park are included in this series, since they are not truly wild animals, but are descended from a domesticated breed. The celebrated Greyhound “Fullerton” is shown among the series of Dogs, which also comprises examples of the Afghan Greyhound, and of the Slughi or Arab Greyhound. Small-sized models of Cattle, Horses, Sheep, and Pigs also form a feature of the series. A hybrid between the Zebra and the Ass is shown in one of the cases; while photographs illustrate the results of experiments undertaken by Professor Ewart in cross-breeding between Burchell’s Zebra and the Horse. An example of the Lion-Tiger hybrids born many years ago in Atkins’ menagerie is likewise shown. A fine series of hybrid Ducks and hybrid Pheasants is exhibited in the north hall. [Sidenote: Skeletons of Man and Horse.]