What was mr whites third wish and why?

mr whites third wish was to for his son to disappear/ go back to the grave. he wished this because when he had to choose which one was his sons body he had to choose by looking at the clothing not the face. he had to choose that way because his sons body was mutilated and disfigured. so when he wished for his son back.. his son would come back in that gross disfigured appearance.. and also since he as been in the grave for a while he would also be decomposing. and he didn't want his hysterical wife to see her son like that.