The globe itself rotates within a metallic meridian to which its axis is attached.
In reality the head and foot are fixed and the shell rotates from right to left.
An expedition to the North Pole has nothing to reach unless the earth rotates.
The movement of the zoospore is effected by the lashing of the cilia and is in the direction of the beak, while the zoospore slowly rotates on its long axis at the same time.
The couple T is necessarily accompanied by an equal and opposite couple acting on the frame, which couple endeavours to turn the frame in the opposite direction to that in which the axle rotates.
