"`An Ethical Problem,' by Albert Leffingwell, M.D., is by far the most judicial and unimpassioned contribution to the study of the question that it has been our privilege to read. Dr. Leffingwell has long been known both in this country and Europe, as a writer upon this theme. No one, so far as we know, has brought to it at once so calm and balanced a judgment as he, or a more exact knowledge of the whole field in which biological investigation plays so large a part. This latest publication from his pen is the result of years of study, of unremitting toil in the great libraries of this country and abroad where every facility was at hand to obtain data and to verify facts. It is a book written without bitterness ... which seeks to carry conviction, not by the force of unverified quotations, or the repetitions of utterances often made in the heat of controversy, but by arguments based upon demonstrable fact, and supported by authorities to which you are referred, chapter and verse.... "The time must come when physiologists as a body--as Professor James declares they should have done long ere this--will meet public opinion half-way, `and admitting that the situation is a genuinely ethical one ... give up the preposterous claim that every scientist has an unlimited right to vivisect, for the amount or mode of which no man, not even a colleague, can call him to account.' When that time comes, and we believe it is not far distant, some legal regulation of animal experimentation will be had. For this end, the book we have reviewed has been written; and when at last such regulation is attained, none will have a larger share in the gratitude of all who will rejoice in it, than the author whose notable book we have been considering." --Dr. F. H. Rowley, in Our Dumb Animals. --------------------- "Dr. Leffingwell's `Ethical Problem' is vivisection, TO WHICH HE IS IMPLACABLY OPPOSED, and which he describes as antivivisectionists generally do."--The Syracuse Post-Standard. "Probably the best-considered treatise on the subject now in print. The author does not take the position that experimentation upon animals is always wrong. He maintains, however, in the most convincing way, that such experiments should be permitted only by genuine scientists.... Anyone interested in this vital question will find much that is stimulating, suggestive, and convincing in Dr. Leffingwell's book."--Universalist Leader.