[Enclosure]

—Annelid Slab.—

The slab is from the Coal Measures of the South Staffordshire Coal field and lies about the centre of the Coal-field.

The Bed from which it was taken is peculiar there being no other like it in the Coal field. It is highly adapted for grinding edge tools, cutlery, and used largely at Sheffield and such Towns and indeed over the civilized World. The power in cutting even steel is immense—

The Bed lies about 12 yds above the “Thick or 10 yard Coal” is itself about 10 yds thick and has a bearing of soil & Red & Yellow Clay of about 6 yds lying on the top of it.

The deposit of Rock is confined to a space of about 1 mile long, and about 50 to 60 yards wide, in the shape of a long narrow Boat slightly dipping all roads towards the centre.

The Slabs with the markings are often found about 2 or 3 inches thick but sometimes $\frac{1}{2}$ a yard thick, & lie at different altitudes in the bed, but always with the markings upwards.—

The markings are associated in the same bed, but not in contact with (?) anthocosia & a few varieties of ferns, but are of very rare occurance and in a somewhat imperfectly preserved state.

H. J. Feby 11^th. 1882.