கேள்வி: நிகோலசு லூயிசு தெ லா கைல்லே - முதன்மைப் பணிகள் குறித்து விரிவாக சொல்லுங்கள்.
பதில்: File:Messier 55 VISTA.jpg ஒரு பேரியல் விண்மீன் கோத்து ஆகும்.]] *''Astronomiae Fundamenta'' (1757), containing a standard catalogue of 398 stars, re-edited by Francis Baily (Memoirs Roy. Astr. Society, v. 93) *''Tabulae Solares'' (1758) *[https://books.google.com/books?id=ijEVAAAAQAAJ&printsec=frontcover&dq=Coelum+Australe+Stelliferum&ei=-vPySujrFYSWzASZyaj4Bw#v=onepage&q=&f=false ''Coelum australe stelliferum''] (1763) (edited by J. D. Maraldi), giving zone observations of 10,000 stars, and describing fourteen new constellations *''Observations sur 515 étoiles du Zodiaque'' (published in t. vi. of his ''Ephémérides'', 1763) *''Leçons élémentaires de Mathématiques'' (1741), frequently reprinted *ditto ''de Mécanique'' (1743), &c. *ditto ''d'Astronomie'' (1746), 4th edition augmented by Lalande (1779) *ditto ''d'Optique'' (1750), &c. *Calculations by him of eclipses for eighteen hundred years were inserted in ''L'Art de vérifier les dates'' by Benedictine historian Charles Clémencet (1750) *He communicated to the Academy in 1755 a classed catalogue of forty two southern nebulae,[http://www.messier.obspm.fr/xtra/history/lacaille.html Lacaille's "Catalog of Nebulae of the Southern Sky"] in [http://www.messier.obspm.fr/ SEDS' Messier Database] and gave in t. ii. of his ''Ephémérides'' (1755) practical rules for the employment of the lunar method of longitudes, proposing in his additions to Pierre Bouguer's ''Traité de Navigation'' (1760) the model of a nautical almanac.