Research index·Journal articleNotesNature·1 Nov 1885NobleIDark:/48914/w1/20260521/565FCFA8DOI10.1038/033039a0Journal articleNotesNature · 1885 · SubscriptionNobleIDark:/48914/w1/20260521/565FCFA8DOI10.1038/033039a0ReadRead at the publisherSaveCiteAdd to literature reviewPaywalledThe full text is at the publisherOpen it at the publisher to read it.Read at the publisherDiscussionAdd to the discussionTopicsGeorge (robot)PhilosophyClassicsTheologyHumanitiesArtArt historyRelated papersMoreDetailsPublished, publisher, issueSuggest a correction or report