Margaret Jane Cassidy and her brother Michael demonstrate the ayro wheel.
Location of events unknown.
Various shots of men in the athletic wheel. Various shots of 16 year old Margaret Jane Cassidy demonstrating the ayro wheel which is similar, she stands in the middle and holds onto handles and propels it around with her body. C/U of her face. Her eight year old brother Michael John also uses the wheel. Various shots as he spins around, including shots from inside the wheel. Michael runs along and dives in the river.