Add punctuation: In January 1851 he succeeded in constructing such a pendulum in the basement of his house
A: In January 1851 he succeeded in constructing such a pendulum in the basement of his house.

Add punctuation: When it was published this work was the typescript of a drama which had not been performed today it has been running for fifty years and its title is The Twentieth Century The characters depicted in it move on our contemporary stage play the parts foretold and produce the events foreseen
A: When it was published this work was the typescript of a drama which had not been performed; today it has been running for fifty years and its title is The Twentieth Century. The characters depicted in it move on our contemporary stage, play the parts foretold and produce the events foreseen.

Add punctuation: For 100 years Noah warned the unheeding world from age 500 until he was 600 years old
A:
For 100 years Noah warned the unheeding world, from age 500 until he was 600 years old.