"In the mass of the 'till' itself fossils sometimes, but very rarely, occur. Tusks of the mammoth, reindeer-antlers, and fragments of wood have from time to time been discovered. They almost invariably afford marks of having been subjected to the same action as the stones and bowlders by which they are surrounded."[4]
Another says:
"Logs and fragments of wood are often got at great depths in the buried gorges."[5]
[1. "Smithsonian Contributions," vol. xv.
2. "The Great Ice Age," p. 492.
3. Agassiz, "Geological Sketches," p. 209.
4. "The Great Ice Age," p. 150.
5. "Illustrations of Surface Geology," "Smithsonian Contributions.">[
{p. 50}
Mr. Geikie says: