MUIRKIRK, a village and parish, in the district of Kyle, county of Ayr, 10 miles (W. by S.) from Douglas; containing, with the village of Glenbuck, 3125 inhabitants. The origin and history of this place are both involved in obscurity and uncertainty; little more of it is known than that, previously to the year 1626, it formed part of the parish of Mauchline, and as such was included in the barony of the Earls of Loudoun. An attempt has been made to deduce the history of some transactions connected with the place, from the existence of various stones in different parts; but they are neither inscribed with any characters tending to explain the cause of their erection, nor are they of sufficient magnitude to warrant the opinion of their being monuments of commemoration. The parish, which is situated on the river Ayr, is about eight miles in length from east to west, and seven miles broad from north to south; and comprises about 30,000 acres. Of this area, but a comparatively small portion is cultivated: 2.50 acres are woodland and plantations, and the remainder is in a state of nature: a very considerable portion might be rendered fertile, and brought into cultivation, at a moderate expense. The surface is irregular; it is tolerably even near the banks of the rivers, but in other parts rises abruptly into lofty eminences. The highest of these is the hill of Cairntable, which has an elevation of 1650 feet above the level of the sea, and is crowned by two large cairns; it is chiefly composed of breccia, and for many years afforded a supply of millstones for the parish. The higher grounds are clothed with a kind of dark-coloured heath that gives to the scenery a cheerless aspect, which is increased by the want of timber. The river Ayr has its source in this parish, in a spot where two artificial lakes have been formed by the Catrine Company, as reservoirs for the use of their cotton-works, and which cover about 120 acres of ground. From these the river issues, receiving from the hills in its progress through the parish numerous tributary streams, of which the chief are the Garpel, the Greenoch, and the Whitehaugh; and thus augmented, it pursues its course, for about thirty miles, and falls into the Firth of Clyde at Ayr. There are springs affording an ample supply of excellent water, and also some that have a petrifying property: some are slightly impregnated with iron, sulphur, and other minerals. The SOIL is various, consisting of sand, gravel, loam, and clay, with peat-moss, which is found in some parts twenty feet in depth: the crops are, grain of all kinds, potatoes, and turnips. The rotation system of husbandry has been generally adopted, and the state of agriculture is improved. The plantations are chiefly spruce, larch, and Scotch fir. Surface-draining has been practised on some of the farms, with very beneficial results, by the tenants at their own expense; it has been done, however, only on a limited scale. In 1830 the Duke of Portland became proprietor of the estate of Muirkirk, and since that period tile-draining has been carried on under his grace's agents to a considerable extent, embracing hundreds of acres. Some of the resident proprietors have also been actively engaged in tile-draining their lands, so that, within a short period, large tracts of land have been thoroughly drained, the effect of which is manifest, not only in the increased quantity and improved quality of the crops, but likewise in the amelioration of the climate. The farm-houses are substantial and commodious, especially those of more recent erection. Very few of the lands are inclosed, and those only with stone dykes. The cows are of the Cunninghame breed, and a considerable number of young cattle of the same breed are annually reared, to the improvement of which adequate attention is paid. Great numbers of sheep are also fed; they are the black-faced, and seem to be well adapted to the quality of the pastures. The woods appear to have been almost destroyed: from old documents it is clear that this was a forest towards the close of the twelfth century; and from the numerous trees, also, embedded in the mosses, and from some detached portions of trees still found in various parts, it is evident that the parish formerly abounded with timber. Wellwood, the property of the Duke of Portland, is an ancient mansion beautifully situated on the banks of the Ayr, and embosomed in thriving plantations. The annual value of real property in the parish is £6179. In this district the substrata are chiefly coal, ironstone, and limestone. The coal formation is part of the great coalfield of the country; the seam at present worked is about twenty-five feet in thickness. The ironstone is found in belts about six inches thick, and within the last few years a rich vein of blackband ironstone has been discovered, which is vigorously worked. The limestone is also of good quality, and is extensively quarried. Lead and manganese have likewise been found; the former was worked for some time, but the working was not productive, and it was consequently discontinued. The iron-works in this parish, which are very extensive, were erected in 17S7, and have since been carried on with spirit by the proprietors; they consist of four blast-furnaces for the manufacture of pig-iron, a large foundry, and a rolling-mill for bar-iron. There were formerly some iron-works established at Glenbuck by an English company; but they were afterwards abandoned. The village of Muirkirk has greatly increased since the opening of the works in its neighbourhood; it is inhabited chiefly by persons employed in the collieries and limestone- quarries, and in the iron-works. Two circulating libraries, containing well-assorted collections, are supported by subscription. Fairs are held in February and December; but they are not well attended. A postoffice and a branch bank have been established; and facility of intercourse with Strathaven, the nearest market- town, and with other places in the neighbourhood, is maintained by good roads which pass through the parish. Muirkirk has also a branch of the Glasgow, Dumfries, and Carlisle railway. Ecclesiastically the parish is in the presbytery of Ayr, synod of Glasgow and Ayr, and in the patronage of the Marquess of Hastings: the minister's stipend is £15/. 17. 3., with a manse, and a glebe valued at £20 per annum. The church, erected about the year 1813, is a neat and substantial edifice adapted for a congregation of 913 persons, and is conveniently situated nearly in the centre of the parish. There are places of worship for Burghers, the United Presbyterian Church, and Independents. The parochial school affords instruction to about seventy children; the master has a salary of £28 per annum, with £30 fees, and a house and garden. There are three friendly societies, the Muirkirk, the St. Thomas's, and the St. Andrew's masonic lodges, established many years ago, and which have contributed to diminish the number of applicants for parochial relief, and to keep alive a spirit of independence among the poor. According to tradition, there was anciently a religious establishment on the summit of Cairntable; but of what order, or when or by whom founded, nothing is recorded. In the parish are three " martyrs' stones", one of them in the churchyard, another at Upper Wellwood, and the very interesting one of John Brown at Priesthill: these memorials of bygone sufferings are visited by many of the strangers that come to Muirkirk.