The public schools ought to be on the watch for genius in any and all kinds of work. When a genius is found, proper training ought to be provided to develop this genius for the good of society as well as for the good of the individual himself. A few children show ability in drawing and painting, others in music, others in mechanical invention, some in literary construction. When it is found that this ability is undoubtedly a native gift and not a passing whim, special opportunity should be provided for its development and training. It will be better for the general welfare, as well as for individual happiness, if each does in life that for which he is by nature best fitted. For most of us, however, there is not much difference in our abilities. We can do one thing as well as we can many other things. But in a few there are undoubted special native gifts. SUMMARY. This is an orderly world, in which everything has a cause. All events are connected in a chain of causes and effects. Human beings live in this world of natural law and are subject to it. Human life is completely within this world of law and order and is a part of it. Education is possible only because we can change human beings by having influences act upon them. Individuals receive their original traits from their ancestors, probably as parts or units. Mendelism is the doctrine of the pure transmission of unit characters. Eugenics is the science of improving the human race by selective breeding. An individual's life is the result of the interaction of his hereditary characteristics and his environment. CLASS EXERCISES 1. Try to find rock containing the remains of animals. You can get information on such matters from a textbook on geology. 2. Read in a geology about the different geological epochs in the history of the earth. 3. Make a comparison of the length of infancy in the lower animals and in man. What is the significance of what you find? What advantage does it give man? 4. What is natural selection? How does it lead to change in animals? Does natural selection still operate among human beings? (See a modern textbook on zoölogy.) 5. By observation and from consulting a zoölogy, learn about the different classes of animal forms, from low forms to high forms. 6. By studying domestic animals, see what you can learn about heredity. Enumerate all the points that you find bearing upon heredity. 7. In a similar way, make a study of heredity in your family. Consider such characteristics as height, weight, shape of head, shape of nose, hair and eye color. Can you find any evidence of the inheritance of mental traits? 8. Make a complete outline of Chapter II. REFERENCES FOR CLASS READING DAVENPORT: _Heredity in Relation to Eugenics_. KELLICOTT: _The Social Direction of Human Evolution_. CHAPTER III MIND AND BODY