Very rare, and consequently expensive, animals are generally purchased. Thus, the first Rhinoceros cost 1,000_l._; the four Giraffes, 700_l._, and their carriage an additional 700_l._ The Elephant and calf were bought in 1851 for 500_l._; and the Hippopotamus, although a gift, was not brought home and housed at less than 1,000_l._--a sum which he more than realised in the famous Exhibition season, when the receipts were 10,000_l._ above the previous year. The Lion Albert was purchased for 140_l._; a tiger, in 1852, for 200_l._ The value of some of the smaller birds will appear, however, more startling: thus, the pair of black-necked Swans were purchased for 80_l._; a pair of crowned Pigeons and two Maleos, 60_l._; a pair of Victoria Pigeons, 35_l._; four Mandarin Ducks, 70_l._ Most of these rare birds (now in the great aviary) came from the Knowsley collection, at the sale of which, in 1851, purchases were made to the extent of 985_l._ It would be impossible from these prices, however, to judge of the present value of the animals. Take the Rhinoceros, for example: the first specimen cost 1,000_l._; the second, quite as fine a brute, only 350_l._ Lions range again from 40_l._ to 180_l._, and Tigers from 40_l._ to 200_l._ The ignorance displayed by some persons as to the value of well-known objects is something marvellous.--A sea-captain demanded 600_l._ for a pair of Pythons, and at last took 40_l._! An American offered the Society a Grisly Bear for 2,000_l._, to be delivered in the United States; and, more laughable still, a moribund Walrus, which had been fed for nine weeks on salt pork and meal, was offered for the trifling sum of 700_l._! There is a strange notion that the Zoological Society has proposed a large reward for a "Tortoiseshell Tom-cat," and one was accordingly offered to the Society for 250_l._! But male Tortoiseshell Cats may be had in many quarters.[4] The Surrey Zoological Gardens were established in 1831. Thither Cross removed his menagerie from the King's Mews, where it had been transferred from Exeter Change. At Walworth a glazed circular building, 100 feet in diameter, was built for the cages of the carnivorous animals (Lions, Tigers, Leopards, &c.); and other houses for Mammalia, Birds, &c. Here, in 1834, was first exhibited a young Indian one-horned Rhinoceros, for which Cross paid 800_l._ It was the only specimen brought to England for twenty years. In 1836 were added three Giraffes, one fifteen feet high. The menagerie was dispersed in 1856. The menagerie at Exeter Change was a poor collection, though the admission-charge was, at one period, half-a-crown!