For details of Mr. Gosse's theory, as developed in his Omphalos, see the chapter on Geology in this work.
"History of the Warfare of Science with Theology in Christendom" by Andrew Dickson White
Neither theory attempts to solve this riddle, nor yet the riddle of the Omphalos.
"More Letters of Charles Darwin" by Charles Darwin
To ourselves... new paganism... omphalos.
"Ulysses" by James Joyce
Grave doubts, however, exist as to the connection of the figure and of the omphalos.
"A Catalogue of Sculpture in the Department of Greek and Roman Antiquities, British Museum, Volume I (of 2)" by A. H. Smith
Delphi also contained the "Omphalos," a sacred stone bound with fillets, supposed to mark the centre of the earth.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 10" by Various