St. Merran measures 3,644 statute acres. Annual value of the Real Property, as £. _s._ _d._ returned to Parliament in 1815 4,084 0 0 Poor Rate in 1831 428 18 0 Population, { in 1801, | in 1811, | in 1821, | in 1831, { 425 | 458 | 537 | 576 giving an increase of 35½ per cent. in 30 years. The Rev. John Bayley, the present Vicar of St. Merryn, was collated in 1803 by the Bishop of Exeter. GEOLOGY, BY DR. BOASE. The rocks of the southern part of this parish resemble those of St. Ervan, but near the church a lamelar blue slate prevails, like that of Endellion, and like it also abounding in veins of the sulphurets of lead and of antimony. The western part of the parish, which extends into the sea, forming a promontory called Trevose Head, is composed of crystalline rocks, which are massive, and differ from all the rocks that are interposed between it and the granite of St. Dennis. Both the composition and the relative situation of these rocks are very interesting. They appear to be the equivalents of the masses of serpentine of Clicker Tor, and of the Lizard district; of the felspathic rocks which form the downs between Launceston and Davidstow; and of that curious mass of rock at King Arthur’s Castle, in Tintagel. Geologists have yet to learn the precise relation of these crystalline masses with the calcareous series in which they are situated. MERTHYR. HALS. Merthyr, Murder, vicarage, is situated in the hundred of Powder, and hath upon the north and east Probus and Tresilian river, south Lamoran and St. Michael Penkivell, west an arm of Falmouth Harbour, towards Clemens. As for the name, it refers to the tutelar patron and guardian saint of the church, who it seems was murdered and slain for the Christian religion, as a martyr; viz. one St. Cohan, a Briton of this parish, whose little well, and consecrated chapel annexed thereto, was lately extant, upon the lands of Egles Merthyr barton, (that is to say upon the lands of the Martyr’s Church,) though now in a manner demolished by greedy searchers for money. This church goes in presentation and consolidation as a daughter to St. Probus, which vicar is to present the curate, vicar, or chaplain of Merthyr to the Bishop for licence and confirmation; though the eight men of the said parish are by ancient custom to choose and name him, in consideration whereof the vicar of Probus is to receive annually from them, on the high altar, three shillings and four pence.