... reference to superficial extent of surface, but was a denomination of value alone, in which was included the proportion of the surrounding commonty or scattald. Merk lands are of different values, as sixpenny, ninepenny, twelvepenny,—a twelvepenny merk having, formerly at least, been considered equal to two sixpenny merks; and in some old deeds lands are described as thirty merks sixpenny, otherwise fifteen merks twelvepenny land. All assessments have, however, for a very long period, been levied and all privileges ... — Notes and Queries, Number 191, June 25, 1853 • Various