Scientific Book Club, London, 1964.  Hard cover, 252 pages.  Blue paper over boards with black lettering on spine.  Corners bumped with wear and bits of board exposed; spine darkened with bumping and scrape at lower end; some marks and stains on boards; binding sound.  No jacket.  Interior clean and unmarked with tanned pages; one neat diagonal tape repair; some foxing on outer page block.  ‘… for in addition to my other peculiarities, I have a missionary complex and want others to see what I see. … So I have here a collection of essays with little internal unity.  They are glimpses, here and there, of the orchard of science, as viewed from a height.  And the reason for the collection is only that I do want, very much, to have you see what I see.’ (from Introduction)