of the Lead-mine district, that I have given the account of them under a separate section. This part of the country has been explored for coal by Mr. Buddle, and it is chiefly from his pamphlet that I have derived the following information.
In the vicinity of Wark, 15 miles south-west of Tweedmouth, the beds consist of marl, micaceous sandstone, and slate-clay; and about a quarter of a mile below Coldstream, in the north bank of the river, the strata are
| feet | |
| 1. Soil, light and sandy | 15 |
| 2. Ditto, gravelly | 15 |
| 3. Coarse grained yellowish white micaceous sandstone | 18 |
| 4. Micaceous sandstone alternating with slate clay to the level of the Tweed. |
These measures dip to the east at an angle of 5 or 6 degrees.
At Lenel quarry, half a mile below Coldstream on the northern bank of the Tweed, the strata are,
| feet | |
| 1. Light soil | 15 |
| 2. Soft sandstone and marl | 4 |
| 3. Sandstone resembling that in the last section | 24 |
| 4. Slate clay. |
At Bingham or Spring-Hill, north of the Tweed, the following is the order of the strata.
| 1. Light sandy soil. |
| 2. Blue marl inclining to a greenish colour. |
| 3. Blue limestone. |
| 4. Marl of slaty texture. |
| 5. Limestone. |
| 6. Slate clay. |
