Near the end a wide shot shows Inspector Henderson riding in a police car with an officer driving and there is a normal distance between the two. In a close-up, Inspector Henderson is sitting right next to the officer who is driving.
About the 6:40 mark, Mr. White and Jimmy are talking an arms length apart. The next view shows the continued conversation, however they are now about 10 feet apart.
From outside the carnival tent where Professor Pepperwinkle is about to activate his invention, Jimmy Olsen calls out his name incorrectly, "Professor? Professor Periwinkle."