What frontier was adopted after Agricola's departure, whether Tweed or Cheviot or other, is unknown.
Parramatta was one of the earliest seats of the tweed manufacture, but its principal industrial dependence has been on the fruit trade.
On the north bank of the Tweed, one mile west of Peebles, stands Neidpath Castle.
The areas occupied by Carboniferous rocks are almost entirely restricted to the Central Plain or Lowlands, but they are also found skirting the Southern Uplands from the mouth of the Tweed to that of the Nith.
The other considerable rentals were the Dee £18,392,£18,392, Tweed £15,389 and Spey £8146.