In company with her brother, Professor Mittag-Leffler, she attended a Mathematical Congress in Algiers, in the early part of the year 1888; and upon the return journey through Italy she made the acquaintance of Signor Pasquale del Pezzo, subsequently Duke of Cajanello, a mathematician and friend of her brother, and professor in the University of Naples. Mrs. Edgren was married to the Duke of Cajanello in 1890, after the dissolution of her marriage with Mr. Edgren. After this event she published a romance which attracted a great deal of attention, called 'Kvinlighet och Erotik' (Womanliness and Erotics), 1890, and among others the drama 'Familjelycka' (Domestic Happiness), and 'En Raeddende Engel' (A Rescuing Angel), with which last she achieved her greatest dramatic success. Her last work was a biography of her intimate friend Sonya Kovalevsky. While in the midst of her literary labors, and in the fullness of her powers, she died suddenly at Naples, October 21st, 1893. The subjects of her writings are the deepest questions of life. Her special theme is the relation between men and women, and in her studies of the question she has given to the world a series of types of wonderful vividness and accuracy. The life that she knows best is the social life of the upper classes; and in all her work, but particularly in her dramas, she treats its problems with a masculine vigor and strength. Realism sometimes overshadows poetry, but the faithfulness of her work is beyond question. OPEN SESAME "It was once upon a time"--so the fairy stories begin. At that particular time there was a government clerk, not precisely young, and a little moth-eaten in appearance, who was on his way home from the office the day after his wedding. On the wedding day itself he had also sat in the office and written until three o'clock. After this he had gone out, and as usual eaten his frugal midday meal at an unpretending restaurant in a narrow street, and then had gone home to his upper chamber in an old house in the Oesterlanggata, in order to get his somewhat worn dress coat, which had done good and faithful service for twelve years. He had speculated a good deal about buying a new coat for his wedding day, but had at last arrived at the conclusion that, all in all, it would be a superfluous luxury. The bride was a telegraph operator, somewhat weakly, and nervous from labor and want, and of rather an unattractive exterior. The wedding took place in all quietness at the house of the bride's old unmarried aunt, who lived in Soeder. The bride had on a black-silk dress, and the newly married pair drove home in a droschke. So the wedding day had passed, but now it was the day after. From ten o'clock on he had sat in his office, just as on all other days. Now he was on the way home--his own home! That was a strange feeling; indeed, it was such an overpowering feeling that he stood still many times on the way and fell into a brown study.