Who is the narrator of the story "A Day's Wait"?

The narrator of the story is Schatz's father. This is important because he has only a limited perspective on things, which is entirely appropriate, as it's the father's lack of understanding of his son's condition that forms the basis of much of the story's action.
At no point in the story does the father truly grasp the full measure of Schatz's fraught psychological state. Due to the dangerously high temperature, he's running, the boy's got it into his head that he's going to die. Unable to comprehend the seriousness of Schatz's emotional condition, the narrator has no compunction in leaving his son's bedside to go outside for a spot of quail hunting. Meanwhile, back at the house, poor Schatz is convinced that he's going to die, all because he doesn't known the difference between Celsius and Fahrenheit.