Gaston Darboux (1842-1917) was a student of the geometer Michel Chasles and is recognized for his contributions to differential geometry. His Lessons on Orthogonality and Curvilinear Coordinates, originally written for his students at the University of Paris, was first published in 1898. The title page shown above is from the 1910 edition.
The Special Collections staff at the Linderman Library of Lehigh University in Bethlehem, Pennsylvania, is pleased to cooperate with the Mathematical Association of America to exhibit this and other items from the Library’s holdings in “Mathematical Treasures.” In particular, Convergence would like to thank Lois Fischer Black, Curator, Special Collections, and Ilhan Citak, Archives and Special Collections Librarian, for their kind assistance in helping to make this display possible. You may use these images in your classroom; all other uses require permission from the Special Collections staff, Linderman Library, Lehigh University.