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Rh of property began to organize themselves for the restoration of order. On the 15th of June, Richard, after confession and receiving the Sacrament, rode to Smithfield for a further conference with the rebels. Close to St Bartholomew's Church he met Wat Tyler, who advanced from the ranks of the insurgents and shook the king's hand, bidding him be of good cheer. Tyler then formulated a number of fresh demands, including the confiscation of ecclesiastical estates and the institution of social equality. Richard replied that the popular desire should be satisfied “saving the regalities of the Crown.” Tyler thereupon grew insolent, and in the altercation that ensued the rebel leader was killed by the mayor, (q.v.), and John Standwick, one of the king's squires. The rebels now handled their bows in a menacing fashion, but at the critical moment the young king with great presence of mind and courage spurred his horse into the open, crying, “Sirs, will you shoot your king? I will be your chief and captain, you shall have from me all that you seek.” Richard then led the mob to a neighbouring meadow, where he kept them in parley till Walworth, who had returned within the city to summon the loyal citizens to the king's aid, returned with a sufficient following to overawe and disperse the rebels. With the death of Wat Tyler the rising in London and the home counties quickly subsided, though in East Anglia it flickered a short time longer under the leadership of John Wraw and Geoffrey Litster until suppressed by the energy of Henry Despenser, bishop of Norwich. About 110 persons were executed for the rebellion in Kent and Essex, including John Ball, and Jack Straw, Tyler's chief lieutenant. The enfranchisement of villeins granted by Richard at the Mile End conference was revoked by parliament in 1382, and no permanent results were obtained for the peasants by Wat Tyler's revolt.

.—The best original account of the rebellion of Wat Tyler is the “Anonimal Chronicle of St Mary's, York,” printed by G. M. Trevelyan in the ''Eng. Hist. Rev.'' (1898). See also Thomas Walsingham, Chronicon Angliae (Rolls series, 1874); Froissart, Chronicles (edited by G. C. Macaulay, London, 1895); André Réville, Le Soulèvement des travaillers d'Angleterre en 1381 (Paris, 1898); C. Oman, The Great Revolt of 1381 (Oxford, 1906), and The Political History of England, vol. iv. (ed. by W. Hunt and R. L. Poole, London, 1906).

 TYLER, a city and the county-seat of Smith county, Texas, U.S.A., about 115 m. E. by S. of Dallas. Pop. (1890), 6908; (1900), 8069, of whom 2693 were negroes; (1910 census), 10,400. Tyler is served by the International & Great Northern and the St Louis South-Western railways. It is the seat of the Tyler Commercial College, of the East Texas Conservatory of Music and of two institutions for negroes—Texas College (1895; Colored Methodist Episcopal) and the East Texas Normal and Industrial Academy (Baptist, 1905). The principal public buildings include the city hall, the county court-house, a Carnegie library and the post office and Federal Courts building. Sessions of the United States Circuit and District Courts, and of a state district court, as well as of the county court, are held in Tyler. Tyler is situated in a prosperous agricultural region, and has various manufactures. The St Louis South-Western railway maintains general offices and machine-shops here. Tyler, named in honour of President John Tyler, was settled in 1847, was incorporated as a town in 1870 and was chartered as a city in 1907.  TYLOPODA (Gr. for boss-footed, in reference to the cushion-like pads forming the soles of the feet), the scientific name of the section of ruminating artiodactyle ungulate mammals (see ) now represented by the Old World camels (see ) and the South American Llamas (see ).

Characters.—In the skull there is a sagittal crest; the tympanic bulla is filled with cancellous tissue; the condyle of the lower jaw is rounded; and the premaxillae, or anterior bones of the upper jaw, have the full number of incisor teeth in the young state, the outermost of these being persistent through life as an isolated tooth. The tusk-like canines are present in both jaws, those of the lower jaw

being differentiated from the long, horizontal and spatulate incisors; in form they are sub-erect and pointed. The crowns of the molars belong to the crescentic or selenodont type, and are tall-crowned or hypsodont; but one or more of the anterior premolars is usually detached from the series, and of simple pointed form. The hinder part of the body is much contracted, and the femur long and vertically placed, so that the knee-joint is lower in position, and the thigh altogether more detached from the abdomen than in most mammals. The limbs are long, but with only two digits (the third and fourth) developed on each, no traces of any of the others being present. The trapezoid and magnum of the carpus, and the cuboid and navicular of the tarsus are distinct. The two cannon-bones of each limb are confluent for the greater part of their length, though separated for a considerable distance at the lower end. Their lower articular surfaces, instead of being pulley-like, with deep ridges and grooves, as in other Artiodactyla, are simple, rounded and smooth. The first phalanges are expanded at their lower ends, and the wide, depressed middle phalanges embedded in a broad cutaneous pad, forming the sole of the foot, on which the animal rests in walking instead of on the hoofs. The terminal phalanges are small and nodular, not flattened on their inner or opposed surfaces, and not completely encased in hoofs, but bearing nails on their upper surface only. The neck is long and curved, and its vertebrae are remarkable for the position of the canal for the transmission of the vertebral artery, which does not perforate the transverse process, but passes obliquely through the anterior part of the pedicle of the arch. There are no horns or antlers. Though these animals ruminate, the stomach differs considerably in the details of its construction from that of the Pecora. The interior of the rumen or paunch has no tags or villi on its surface, and there is no distinct psalterium or many plies. Both first and second compartments are remarkable for the presence of a number of pouches or cells in their walls, with muscular partitions, and a sphincter-like arrangement of their orifices, by which they can be shut off from the rest of the cavity, and into which the fluid portion only of the contents of the stomach is allowed to enter. The placenta is diffuse, not cotyledonary. Finally, the Tylopoda differ not only from other ungulates, but from all other mammals, in the fact that the red corpuscles of the blood, instead of being circular in outline, are oval as in the inferior vertebrate classes.

Camels.—Of the two existing generic representatives of the Camelidae (as the family in which they are both included is named), the Old World camels (Camelus) are characterized by their great bodily size, and the presence of one or two fleshy humps, which diminish or increase in size according to the physical condition of the animals themselves. There is a total of 34 teeth, arranged as i. , c. , p. , m. . Of these the first upper premolar is a simple tooth placed close behind the premaxilla and separated by a long gap from the two other teeth of the same series; while the lower incisors, of which the outermost is the largest, are directed partially forwards. The skull is elongated, with an overhanging occiput, complete bony rims to the orbits, and the premaxillae separated from the arched and rather long nasals. The vertebrae are C. 7. D. 12. L. 7. S. 4 and Ca. 13 to 15. The ears are short and rounded; the toes of the broad feet very imperfectly separated; the tail is well developed, with a terminal tuft; and the straight hair is not woolly.

Llamas.—Although the name llama properly applies only to one of the domesticated breeds, zoologically it is taken to include all the South American representatives of the Camelidae, which form the genus Lama. In this sense, llamas are characterized as follows. The dentition in the adult is i. , c. , p. , m. ; total 32. In the upper jaw there is a compressed, sharp-pointed, tusk-like incisor near the hind edge of the premaxilla, followed in the male at least by a moderate-sized, pointed, curved canine in the anterior part of the maxilla. The isolated canine-like premolar which follows in the camels is not present. The teeth of the cheek-series which are in contact with each other consist of two small premolars (the first almost rudimentary) and three broad molars, constructed generally like those of Camelus. In the lower jaw the three incisors are long, spatulate and horizontal, with the outer one the smallest. Next to the latter is a curved, sub-erect canine, followed after an interval by an isolated minute and often deciduous simple conical premolar; then a contiguous series of one premolar and three molars, which differ from those of recent species of Camelus in having a small accessory column at the anterior outer edge. The skull generally resembles that of Camelus, the relatively larger brain-cavity and orbits and less developed cranial ridges being due to its smaller size. The nasal bones are shorter and broader, and are joined by the premaxillae. Vertebrae: C. 7, D. 12, L. 7, S. 4, Ca. 15 to 20. Ears rather long and pointed. No hump. Feet narrow, the toes being more separated than in the camels, and each with a distinct plantar pad. Tail short. Hairy covering long and woolly. Size smaller and general form lighter than in the camels. Llamas are now confined to the western and southernmost parts of South America, though fossil remains have been found in the caves of Brazil, and in the pampas of the Argentine Republic. (See also
 * ; and .)

Fossil History.—As regards the past history of the group, remains of fossil species of Camelus have been obtained from the superficial 