After a tour in the South, Professor Proctor returned to New York, put up at the Westminster Hotel, and was taken ill there with yellow fever, which he had contracted in Florida. He died after a very brief illness on September 12, 1888, and was buried in Greenwood Cemetery, where a monument was erected over his grave by the late George W. Childs. During the World’s Fair, in Chicago, at kindergarten meetings for teachers and children, a young lady gave a lecture on “Astronomy for Children” before representatives of the kindergarten schools all over the country. Her audience was fairly electrified by the simplicity, eloquence, and marvellous knowledge displayed in this address. After the lecture, many came forward to congratulate the fair speaker, and to ascertain who she was and whence she came. It proved that she was Miss Mary Proctor, of St. Joseph, Mo., where she had a kindergarten school, and that she was the daughter of the late Richard A. Proctor, the famous English astronomer. Representatives of newspapers from all parts of the country happened to be present. They telegraphed to their home papers accounts of this young woman’s wonderful address, and she awoke the next morning to find herself famous. I at once proposed that she enter the lecture-field, but it was with great hesitancy that she could think of leaving her work with the children, whom she loved so dearly, at her home in St. Joseph. She was interviewed by reporters, and asked to write on astronomy for the leading magazines and the great Sunday newspapers. She also prepared lectures on astronomy, with elaborate illustrations, and was invited to lecture before the literary societies and clubs, colleges and public schools. She has held the very first place as a woman in the profession up to the present time. She has written a book on astronomy entitled “Stories of Starland,” for children, and her name has become a household word. Her great ambition is to be known as “The Children’s Astronomer.” She looks young to stand before an audience and deal with such weighty topics, but she does so in a manner that holds the attention and interest of every hearer, young or old. Her voice is clear, forcible, pleasant and well modulated; her delivery, graceful and easy. She never refers to notes of any kind while on the platform. Her talks are full of simple example and metaphor, and free from all technical terms. She has inherited her father’s gift of popularizing the most abstruse subjects and illustrating their vastness by comparisons associated with daily life. Her lectures for children, “Giant Sun and His Family” and “Legends of the Stars,” and her more advanced lectures on “Other Worlds than Ours,” “Wonders of the Star Depths,” and “Mars, the Planet of Romance,” are all beautifully illustrated by stereopticon views that are quite as wonderful for this day as her father’s cruder pictures were thirty years ago.