Mark Lucar, who was baptized by immersion in London.
After the first few days of immersion the stalks are examined daily to test the progress of the retting.
In the summer of 1864 a sermon which he preached and printed on Baptismal Regeneration (a doctrine which he strenuously repudiated, maintaining that immersion was only an outward and visible sign of the inward conversion) led to a difference with the bulk of the Evangelical party, both Nonconformist and Anglican.
Samples of this timber have been studied after forty-three years' immersion in sea-water.
Most remarkable is the presence of a number of beetles along the seashore between tide-marks, where, sheltered in some secure nook, they undergo immersion twice daily, and have their active life confined to the few hours of the low ebb.