Directions: In the following items, each passage consists of six sentences. The first sentence (S1) and the final sentence (S6) are given. The middle four sentences (P, Q, R, S) have been jumbled. Find the proper sequence.

S1: Louis Pasteur had a very busy and interesting life.

S6: He was always very proud of being able to help his country in this way.

P: Among the people whom Pasteur was able to help were brewers, breeders of silk worms, and cow keepers, all of whom were trying to carry on important industries.

Q: He worked hard in his laboratory with test tubes and all kinds of experiments.

R: He was working to help people who were suffering in some special way from disease.

S: He not only made some exciting discoveries about germs but he was able to use his discoveries in very practical ways.