Other mistake: In late evening a messenger boy riding a bicycle stops across the street from Harold's house. As he turns the handlebars toward the left, the bicycle light shines through the front window of Harold's house. However, in the close-up of the window, the light is shown moving from left to right. It should be moving from right to left.
Revealing mistake: Harold is taking his family for a drive in his brand-new Butterfly Eight automobile. He drives as fast as 50 miles an hour. Three times, a close-up of the speedometer and odometer is shown but the mileage never changes. It stays at 2.4 miles.
Continuity mistake: Harold takes a bottle of chloroform away from his young nephew and puts it in his pocket. The label says "Chloroform, 2% alcohol." Twice at dinner, Harold looks at the bottle and a close-up is shown. In the second close-up the "2% alcohol" is missing from the label.
