Lawes' books on Sing Sing have built up a substantial market, and this -- though less popular in subject matter than some of the others, is surer of a good sale. The first part consists of the diary of one of the prisoners, an educated man committed for embezzlement. This gives a slant on what prisoners think and do, pen portraits of some of the inmates, record of daily routine, and an inquiry into penological problems which Lawes attempts to answer. There is a strong brief for the parole system. There is a discussion of the legal discrepancies in which 18th century law comes into conflict with 20th century problems. There is a plea for federal crime legislation, as opposed to state. The last section deals with prevention, through the home, the school and the church. Well written.