My work requires much study and concentration. I have recommended to several men who do similar mental work that they follow my plan of securing delightful relaxation by losing themselves in another world through Science Fiction magazines. Most of them find it as restful as I do.--Berenice M. Harrison, Angola, Ind. _Likes R. F. Starzl_ Dear Editor: It has been my purpose to write to you before, but due to an extraordinary amount of detail work which I have had to do, I have been unable to. I have read your marvelous magazine ever since the first issue came into my hands, and I can honestly say that there is no other book on the market which has held my attention as long as yours has. I congratulate you on your very interesting magazine. Arthur J. Burks, in his latest story, has conceived an entirely new type of story, and I, for one, think it very interesting. Plenty of science for the laymen and enough interest for the others. I liked R. F. Starzl's story, "The Earthman's Burden," very much, and I hope you will have more by this author soon. His stories are perfect. Starzl is a deep thinker, and I am right here to say that there is a man who understands men and men's longings and inhibitions.--A. W. Gowing, 17 Pasadena St., Springfield, Mass. "_The Readers' Corner_" All readers are extended a sincere and cordial invitation to "come over in 'The Readers' Corner'" and join in our monthly discussion of stories, authors, scientific principles and possibilities--everything that's of common interest in connection with our Astounding Stories. Although from time to time the Editor may make a comment or so, this is a department primarily for Readers, and we want you to make full use of it. Likes, dislikes, criticisms, explanations, roses, brickbats, suggestions--everything's welcome here; so "come over in 'The Readers' Corner'" and discuss it with all of us! _The Editor._ * * * * * A LIVING, DISEMBODIED HEART A disembodied heart, not only still steadily beating but writing, as it throbbed, a permanent, minutely precise record of its pulsations, was exhibited recently at Princeton in a demonstration of the newest instrument developed by science for the advancement of medicine and psychology. The device, invented by A. L. Loomis of Tuxedo Park, N. Y., and perfected in collaboration with Dr. Edmund N. Harvey, professor of psychology at Princeton University, is called the Loomis chronograph.