He seemed to have had more than usual mobility and power of flexion of the lower lumbar region.

When on his back he was unable to rise up, but resting on the lower part of the pelvis he was able to maintain himself erect.

He usually picked up objects with his teeth, and could hold a coin in the axilla as he rolled from place to place.

His rolling was accomplished by a peculiar twisting of the thorax and bending of the pelvis.

There was no history of maternal impression during pregnancy, no injury, and no hereditary disposition to anomalous members.