"In 1892 I edited an atlas of the celestial bodies which has long been out of print ... The question of a new issue of the work having arisen, it was ...
"In 1892 I edited an atlas of the celestial bodies which has long been out of print ... The question of a new issue of the work having arisen, it was deemed better to recast the book completely, and the present volume is the result."--Preface.