Lesson 17 Summary
The Verrazano Bridge,which joins Brooklyn to Staten Island,has a span of 4,260 feet.Its two great towers support four huge cables.The towers are built on platforms made of steet and concrete,extending over 100 feet under the sea and rising nearly 700 feet above the surface of the water.The bridge is suspended from four huge cabled,each of which contains 26,108 lengths of wire.It is not only very strong,but simple and elegant as well.
Lesson 18 Summary
On entering the art gallery,the writer saw a notice which forbade people to touch the exhibits because they were dangerous.The exhibition consisted of pieces of moving sculpture.Against a wall,the writer saw long thin wires attached to metal spheres which attracted and repelled each other.In the centre of the hall were tall structures containing coloured lights which went on and off.
Lesson 19 Summary
Mrs.Ramsay received an anonymous letter three days after her cat's disappearance.The writer of the letter demanded 1,000 pounds for the return of the cat,and warned she would never see him again if she went to the police.She had to put the money in a cardboard box and leave it outside her door.After drawing 1,000 pounds from her bank,she acted on the kidnapper's instructions.The money disappeared the following morning,and Rastus returned at seven o'clock that evening.
Lesson20 Summary
Bleriot and Latham arrived in Calais on July 21st,1909.Though it looked as if there would be a race on July 25th,Latham didn't take part,because he didn't get up early enough.After making a shrot test flight,Bleriot crossed the Channel in thirty-seven minutes.A policeman greeted him when he arrived in Dover.Latham got within half a mile of Dover the following week,having to land on the sea a second time because his engine failed.