The question of vivisection is but a part, indeed a very small part, of the much larger problem as to the relation of men to the lower life which is about them in their fields and in the wilderness. An approximate census of the species now on the earth shows that the number is between two and three million. In the presence of this host, we have to recognize that each of the innumerable individuals in its lifetime is a record of toil and pain the history of which extends backward to the beginnings of life. In this wonderful living world man has trodden ruthlessly, for the reason that he has no sense as to the dignity of the field. In the manner of a vandal, he has slain for profit or sport. He has been so effectual a destroyer that species, genera, and even families of animals have been ruthlessly swept away. The revelation of natural science, of the men of the knife who are so hated by some well-meaning but misdirected people, have now and only in our day brought us to a point where the sense of nature in its organic aspect begins to penetrate the minds of men. The revelation is so vast in its contents and its imports, the conceptions which rest upon it are so greatly enlarging to the human soul, that we may be sure of the wide and swift extension of the new light. It cannot be questioned that the clearer insight will rapidly change the attitude of men toward all living beings. We can in a way discern some of the conceptions as to the rights of the other life which will be enforced on mankind.