"The great names of Galileo, of Huyghens, of Cassini, of Laplace, without speaking of those of my illustrious colleagues and friends, are attached to the history of every serious step forward made in this attractive and difficult theory of Saturn's rings. Your work constitutes another valuable contribution to the same subject and places you in an honorable rank beside those women who have consecrated themselves to the study of mathematics. In the last century Maria Agnesi gave us a treatise on the differential and integral calculus. Since then Sophie Germain, as remarkable for her literary and philosophical talent as for her faculty for mathematics, won the esteem of the great geometricians who honored our country at the commencement of this century. It is but a few years since the Academy awarded one of its most beautiful prizes which will place the name of Mme. Kovalevsky beside those of Euler and Lagrange in the history of discoveries relative to the theory of the movement of a solid body about a fixed point.... And you, mademoiselle, your thesis is the first which a woman has presented and successfully defended before our faculty for the degree of doctor in mathematics. You worthily open the way, and the faculty unanimously makes haste to declare you worthy of obtaining the degree of doctor." Besides her thesis just referred to, Miss Klumpke is the author of numerous communications to scientific journals and learned societies regarding her researches on the spectra of stars and meteorites and other allied subjects. For many years she was at the head of the bureau in the Paris Observatory for measuring the photographic plates that are to be used in the large catalogue of stars and map of the heavens which are to constitute the crowning achievements of the International Astronomical Congress. She was the first woman to be elected a member of the Astronomical Society of France, and the character of her work as an observer as well as a computer has given her an enviable position among the astronomers of the world.[150]