Nothing satisfactory appears to be ascertained respecting the name of this parish; nor does the anniversary of the Feast afford any clue, as it is celebrated on Rogation Sunday, that is on the Sunday before Easter. St. Allen contains 3493 statute acres. Annual value of the Real Property, as £. _s._ _d._ returned to Parliament in 1815 2468 0 0 Poor Rate in 1831 388 19 0 Population, { in 1801, | in 1811, | in 1821, | in 1831, { 360 | 418 | 471 | 637. Increase of population on a hundred, in thirty years 76.9, or 77 per cent. Present Rector, Rev. Nicholas Dyer, instituted in 1794. GEOLOGY, BY DR. BOASE. To the geologist this parish does not afford many interesting objects. It is, however, more favourable than the last to agriculture; although it contains several tracts of barren ground of the same nature as Prince’s Common, which will be described in another place. Its rocks are not distinctly characterised, being situated on the transition between the porphyritic and the calcareous groups of slate formation. [8] William of Worcester describes the Bishop’s castle here as dilapidated temp. Edw. IV. [9] The church of St. Allen was given to the college of Glaveney by Bishop Stapleton, and appropriated to the vicars of that college in 1314. Rot. Pat. 8 Edw. II. p. 2. m. 15. ALTAR NUN. HALS. Altar Nun is situate in the hundred of Lesnewth, and hath upon the north Davidstow and St. Cleather, south part of Northill and Lawanack, east Trewenn, west Temple, and was taxed in Domesday Roll either under the name Trewint, Treuint, the spring, fountain, or well town, situate upon the fens or springs, otherwise under the jurisdiction of Trewen. In the inquisition of the Bishops of Lincoln and Winchester aforesaid, 1294, this church was rated to the Pope’s first-fruits, Ecclesia de Altar Nun, in Decanatu de Lesnewith viii_l._ the vicar xl_s._ In Wolsey’s inquisition 1521, temp. Hen. VIII. 18_l._ 14_s._ 10_d._; the patronage in the Dean and Chapter of Exon, who endowed it; the incumbent Hatton. This parish was rated to the 4_s._ per pound Land-tax 1696, 204_l._ 16_s._