"The favour with which the articles and star-maps, entitled 'The midnight sky at London, ' were received by the readers of the 'Leisure hour, ' has en...
"The favour with which the articles and star-maps, entitled 'The midnight sky at London, ' were received by the readers of the 'Leisure hour, ' has encouraged the committee to re-issue them, with some additional astronomical papers, in a separate and more convenient form."--Pref.