| Population,— | |||
| in 1801, 911 | in 1811, 857 | in 1821, 990 | in 1831, 1280 |
giving an increase of 40½ per cent. in 30 years.
It is not improbable but that the 8 printed in the place of hundred, under the return of 1811, should have been a 9.
Present Vicar, the Rev. Joseph Fayrer, collated by the Bishop of Exeter in 1830.
GEOLOGY, BY DOCTOR BOASE.
This parish is situated on rocks belonging to the calcareous series. On the eastern boundary, however, near the church, the slate is nearly connected with the porphyritic series; here at Treburget is a lead mine in a blue pyrituous slate; the lodes run north-east and south-west, varying from two feet to five feet in thickness. The matrix of the ores consists of angular pieces of slate like fragments cemented by quartz, in which galena, blend, iron pyrites, and spathous iron occur.
Proceeding northward, this lamillar blue slate is succeeded by a shining talcose slate; and at Rediver Mills on the road to Port Isaac, a hard compact rock is quarried for the roads, which contains veins of magnesian minerals; this rock occurs on the side of a steep round-backed hill; and those circumstances, combined with the talcose slate, render it probable that magnesian rocks may exist in the neighbourhood. These rocks are succeeded by slate traversed by veins of antimony, similar to what occurs in Endellion.