If Professor Ladislaus Sklodowski had not loved his laboratory teaching above all else, he would have known that he was overworked. As it was, he counted himself fortunate in being able to serve Truth and to enlist others in her service. For the professor's zeal was of the kind that kindles enthusiasm. If you had seen the faces of those Polish students as they hung on his words and watched breathlessly the result of an experiment, you would have known that they, too, believed in the wonder-working fairies. It seems as if the Polish people have a greater love and understanding of the unseen powers of the world than is given to many other nations. If you read the story of Poland's tragic struggles against foes within and without until, finally, the stronger surrounding countries--Germany, Austria, and Russia--divided her territory as spoil among themselves and she ceased to exist as a distinct nation, you will understand why her children have sought refuge in the things of the spirit. They have in a wonderful degree the courage that rises above the most unfriendly circumstances and says: One day with life and heart Is more than time enough to find a world. Some of them, like Chopin and Paderewski, have found a new world in music; others have found it in poetry and romance; and still others in science. The child who dreamed of fairies in her father's classroom was to discover the greatest marvel of modern science--a discovery that opened up a new world to the masters of physics and chemistry of our day. Marie's mother, who had herself been a teacher, died when the child was very small; and so it happened that the busy father had to take sole care of her and make the laboratory do duty as nursery and playroom. It was not strange that the bright, thoughtful little girl learned to love the things that were so dear to her father's heart. Would he not rather buy things for his work than have meat for dinner? Did he not wear the same shabby kaftan (the full Russian top-coat that looks like a dressing-gown) year after year in order that he might have material for important experiments? Truth was, indeed, more than meat and the love of learning more than raiment in that home, and the little daughter drank in his enthusiasm with the queer laboratory smells which were her native air and the breath of life to her.