The first volume of the Annales de l'observatoire de Meudon was published by him in 1896.
Fundamental alterations were made upon them: their wooden tubes were replaced by tubes of metal; 1 Description de l'observatoire central de Pulkowa, p. 208.
Struve (Description de l'Observatoire ' Central de Pulkowa, pp. 196, 197) adds a few remarks to Steinheil's description, in which he states that the images have not all desirable precision - a fault perhaps inevitable in all micrometers with divided lenses, and which is probably in this case aggravated by the fact that the rays falling upon the divided lens have considerable convergence.
The building was finished in 1832, and the instruments were ready for work in 1835, from which date the observations were published in 4to volumes (Annales de l'Observatoire Royal de Bruxelles), but Quetelet chiefly devoted himself to meteorology and statistics.
Of the Annales de l'observatoire de Paris.
The Annales de l'Observatoire de Paris, the publication of which was set on foot by Leverrier, contain, in vols.
He published twenty-one volumes of Annales, as well as the first two volumes of the great Catalogue de l'observatoire de Paris; founded the Bulletin astronomique, and set on foot two schools of practical astronomy, one at Paris, the other at Montsouris, for the special instruction of naval and military officers, explorers and surveyors.
253; Rapport annuel sur l'observatoire de Paris pour l'annee 1892.