John Louis Emil Dreyer,
1911 Encyclopædia Britannica
(1911)
“ We still find a large private observatory in the middle of the 17th century, that of Johannes Hevelius at Danzig, but the foundation of the royal observatories at Paris and Greenwich and of numerous university observatories shows how rapidly the importance of observations had become recognized by governments and public bodies, and it is not until within the last hundred and thirty years that the development of various new branches of astronomy has enabled private observers to compete with public institutions. ”
