180 THE DEVELOPMENT OF ARCHITECTURE IN ESSEX. closer, until they were separated only by a shaft or mullion, and geometrical tracing was introduced into the heads of the combined windows. 9. The mouldings of arches became somewhat more elaborate, being divided by hollows and fillets into a greater number of members. 10. Buttresses became a feature of this period and were generally placed at right angles to the wall, projecting some distance, and with one, two, or more slopes. It is more difficult to point out a purely Early English church in Essex, because I think it probable that nearly every parish would have been provided with its church during the Norman period, and therefore the work of the succeeding century would probably in the main consist of alterations, enlargements, and sometimes of rebuild- ing a portion of the edifice. The Church of St. Augustine, Birdbrook, gives us a very good example of the style prevailing in the early part of the thirteenth century. We have at the east end a group of three narrow lancet windows with plain heads, with shafts and mouldings inside, with a small single lancet window in the north side, and similar lancets on north and south sides at west end of nave. These windows were no doubt repeated, but they have been superseded at a later period by more elaborate windows. There are also at the S.E. and N.E. corners of chancel two buttresses to each corner, with two distinct slopes, and similar buttresses to nave. This church is an example of the adaptation of a Norman building to an Early English one ; the remains of some of the old Norman windows being still visible. One of the most interesting buildings of this period is the Chapel of St. Nicholas at Little Coggeshall Abbey, of the Order of the Cistercians. It is interesting from two circumstances : 1st. It is practically unaltered from the original design. No doubt repairs have from time to time been executed, but the whole design is practically the same as when originally erected; it has neither been added to nor diminished. 2nd. The jambs and arches of windows, strings, quoins, and other features, are executed in moulded brick, and it is therefore probably one of the earliest examples of moulded brickwork in the kingdom. The Abbey was founded by King Stephen and Maud, his queen, in 1140, and we may fix the date of this building at about 1200. It is a very simple design, being in plan a parallelogram, measuring 43 feet in length from east to west, and 20 feet in width