The simplest and earliest handling of external objects exhibits the fundamental principle which differentiates the forms of our conscious activity, showing them to be such as make for division or for concentration. Play which separates or analyzes easily acquires a special character which allies it with the fighting instincts and concerts it into wild destructiveness. The veriest infant shows its beginnings in his desire to tear paper, pull the heads off of flowers, rummage in boxes, and the like; and as the child grows older he displays more clearly this analytic impulse—boys as a rule more than girls, be it noted. They are constantly taking their toys to pieces, dissecting tools, weapons, clocks, toys, etc.; and since the child, like the savage, has not our clear perception of the difference between what is living and the lifeless, he will pull to pieces a beetle, a fly, or a bird with the same serenity which accompanies his demolition of a flower. Perez tells this of a child hardly ten months old. “His nurse put him on the grass and gave him a turtle to play with, and as he seemed to be absorbed in watching it, left him for a moment. When she came back one of the creature’s legs was torn half off, and the zealous investigator was applying his powers to another.”[212] As far back as Fischart’s time this was known to be different from actual cruelty, and Keller in his Romeo und Julia auf dem Dorfe gives us a classic instance. The boy and girl were playing together with a doll which he suddenly jerked away from the little girl and mischievously tossed up in the air. The doll came to grief in his hands, for a little hole appeared in one of her knees and some bran was escaping. The little girl did not seem to notice the hole, so the boy kept quite still busily making it larger with his finger and increasing the flow of bran. His silence at last aroused her suspicion, and she came closer and beheld his wickedness with horror. “Just look at that!” he cried, holding the leg so that some bran fell in her face; and when she tried to reach the doll, he leaped away, and would not stop until the whole leg hung limp and empty as a husk. Then follows a description of how the offended child was finally won over to join the boy in the work of destruction, helping to bore hole after hole in the body of the martyr. Other examples of the workings of the destructive impulse will be adduced under fighting plays. 3. _Constructive (Synthetic) Movement-Play_