8 miles per hour. 



752 feet.— 32 feet. 



812 feet.— 28 feet. 



7f miles per hour. 



6|f miles per hour 



577 feet.— 28 feet. 

 551 feet.— 28 feet. 



640 feet.— 28 feet 



5Af miles per hour. 



652 feet.— 32 feet. 



20 feet.— 20 feet. 



20 feet.— 22 feet. 



