This might have been a better book than it is. The chief criticism is that it seems to start out as a near-vocational book -- and winds up as a mystery. A boy is kept home from school by trouble with his eyes. His father puts in his hands the supervision of the building of a new house, and through this he learns a great deal about the necessary steps. This line is followed through the initial steps, but when the actual building comes, it is almost dropped from sight, for a new interest develops in the search for the missing treasure. Result -- the book misses on both counts, being neither convincingly one sort or the other.