Note 180 — Chapter XI · FORMATION OF THE MASTER. HIS COURSES OF LITERATURE AND PHILOSOPHY.

Histoire des Mathematiques, t. iv, p. 347; quoted by Crétineau-Joly, t. iv, c. 4, p. 283, who contains a large amount of literature upon this subject. According to late researches, made by MM. C. André and G. Rayet, astronomers of the observatory of Paris, the number of observatories established in the whole world, towards the close of the last century, was 130. Of this number, 32 were founded by Jesuits, or were under their direction.—Victor Van Tricht, La Bibliothèque des Écrivains de la Compagnie de Jésus, etc., appendice 1er, p. 221; 1876.