"Now you go and leave me," she cried. "I am sick of the sight of your faces. Give me a chance. Let me have an hour's start."Shes diving! screamed Sandy.The fog kept its secrets.Water may be considered as a rigid medium for transmitting power, corresponding to shafts and gear wheels; air as a flexible or yielding one, corresponding to belts. There is at this time but a limited use of pneumatic apparatus for transmitting power, but its application is rapidly extending, especially in transporting material by means of air currents, and in conveying power to mining machinery.A policeman was coming. He hailed the car. He could have no suspicion of its occupants as yet, he only sought information. Balmayne pulled the lever and the car started. The officer yelled instructions to somebody in the darkness; from point to point the message went along. There was no escape unless good luck stood on their side. And the motor was terribly swift.