For his Half-Hours with the Telescope (1868), which eventually reached a 20th edition, he received originally £25 from Messrs Hardwick.
За свою книгу «Полчаса за телескопом» (англ. Half-Hours with the Telescope) (1868), которая в итоге достигла 20-го издания, он получил первоначально £25 от г-на Хардвика.