Another famous order which combined the religious instincts of the cloister with the military ardour of the warrior was that of the Knights of S. John Baptist or Knights Hospitallers, who, besides fighting, were to tend the sick and provide for the welfare of all Christian travellers. The churches belonging to the Templars were usually built in circular form in imitation of the church of the Holy Sepulchre at Jerusalem. They were capped with vaulted concave roofs said to be symbolical of the vast circuit and concave of the heavens. Our best example is the Temple Church, London, to which was added at a later period, a beautiful Early English Gothic extension. Other round churches are those of S. Sepulchre, Cambridge; S. Sepulchre, Northampton; Temple Balsall, Warwickshire, and of Little Maplestead, Essex, which last, although the smallest, is by no means the least interesting. It is attributed to the Hospitallers, an order founded about the year 1092, and introduced into England in the reign of Henry I. At Clerkenwell may still be seen the ancient gateway leading to their hospital. The order was suppressed in 1545. The church at Little Maplestead was built early in the 12th century, and in 1186 the adjoining manor was given by Juliana Doisnel to this order, which gift was confirmed by King John and Henry III. This church is thought to reproduce with more fidelity than the others the original church of the Holy Sepulchre. [Illustration: Norman and Early English Doorways. Showing the transition from one style to another. Dunstable Priory Church. _Drawn by Worthington G. Smith._] These famous Norman round-chancelled churches have much in common with the old basilica form. It must be pointed out that the arbitrary divisions into which architecture has been divided--Norman, Gothic, etc., are pure figures of the imagination, as by a series of easy transitions, one style became gradually merged into the next without any hard and fast dividing lines whatever. The periods during which one style became gradually blended into another are called the periods of transition. [Side note: The Transition.]