Page:Quarterly Journal of the Geological Society of London, vol. 26.djvu/689

 Contemporary phenomena in

Suffolk and Norfolk.

1. Absent.

2. Later Red Crag.

3. Older Red Crag.

4 or 5. Coralline Crag.

5 or 4. Mastodon arvernensis, Equus, and Cervus, sp., of Bone-bed.

6. Diestien, Box-stones of Bone-bed.

7. Rhinoceros Schleiermacheri, Mastodon tapiroides?, and Miocene forms of the Bone-bed.

8. Eocene Beds. Coryphodon, Hyracotherium, of the Bone-bed.

9.

1. Highest Norwich Crag.

2. Norwich Crag.

3. Forest -bed and Elephas-meridionalis fauna of Stone-bed.

4. Absent.

5. M. arvernensis, and some species of Equus and Cervus, of the Stone- bed.

6. Absent.

7. Absent.

8. Absent.

9. Chalk.

II. The Suffolk " Box-stones."

Mr. Searles Wood has alluded to certain sandstone-nodules occurring - in the Suffolk Crag and scattered on the coast, as containing shells, and being probably indurated bits of Coralline Crag. He has also figured, in the 'Supplement' to his invaluable 'Monograph of the Crag Mollusca,' the internal cast of a Pyrula from one of these nodules, which he terms Pyrula acclinis. In the ' Geological Magazine' for 1865, and in the ' Quarterly Journal ' of this Society for the same year, I pointed out that these sandstone masses contain remains of Mollusca and Cetacea similar to those of the Diestien Antwerp beds, and I inferred that the nodules were remnants of a broken up deposit of Diestien age. In 1867 I devoted some time to examining these nodules, and gave a further account of them in the ' Geological Magazine' for that year (p. 91), in which I pointed out that they formed part of the Suffolk bone-bed, and lay at the base of both Red and Coralline Crags. I also gave a list of some of the organic remains found enclosed in these masses. I have since spent a good deal of time in working at the nodules, which I propose to call "Box-stones," since the name of "boxes" has been applied to those which exhibit the remains of a shell on being broken open by the phosphate-diggers of Suffolk. My friend the Rev. H. Canham, of Waldringfield, has also worked at the " Box-stones," and has kindly placed his specimens at my disposal. I must express my great indebtedness to him for the use of his valuable collection. The majority of the box-stones contain no fossil remains at all, and are simply irregular rounded masses of very much hardened sandstone. Probably not one in twenty of the masses contain any organic remains