"No, he has no bent towards exploration, or the enlargement of our geognosis: that would be a special purpose which I could recognize with some approbation, though without felicitating him on a career which so often ends in premature and violent death. But so far is he from having any desire for a more accurate knowledge of the earth's surface, that he said he should prefer not to know the sources of the Nile, and that there should be some unknown regions preserved as hunting grounds for the poetic imagination" (Middlemarch, George Eliot).
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for geognosis in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)