Goofs

In many scenes, the close-up of a chimpanzee is used for the gorilla.

During the sequence in which the gorilla carries Camille across the rooftops, he climbs up a pipe using both hands, when one hand should be occupied by the girl he is carrying.

When the ape is carrying the heroine over the rooftops, in one shot a shop sign in the background is reversed, indicating this shot was "flipped" in editing.

During the sequence in which the gorilla carries the girl across the rooftops, a few of the shots make it very clear that he's holding a stiff-necked female mannequin and not a real person.

The movie is set in 1845 and mentions "evolution" of humans from apes. The concept was not absolutely original with Darwin, who published it in 1859, but the words "evolve" and "evolution" were not applied to it before then.

The Penny farthing bicycle seen at the 32.13 mark wasn't invented until 1871, while the film is set in 1845.

The high wheel bicycle (also known as a penny farthing, high wheeler and ordinary) is a type of bicycle with a large front was invented in 1871 by British engineer, James Starley. This movie was supposed to be in 1845, and such a bicycle appears in the street scene after they pick up Camille after she receives her new bonnet.

When Leon Ames is searching the bedroom, he accidentally tilts a set light flashed on a crucifix on the wall.

When Dr. Mirakle takes away the Woman of the Streets, Arlene Francis is very clearly laughing before she and Lugosi go off camera, when she's supposed to be either sobbing or distressed. She covers her mouth after a few seconds of laughing. Bela is also smiling.

[ Re: at about 16 minutes, 23 seconds, Arlene Francis is apparently smiling while being abducted by Bela Lugosi. ] Sometimes, when it seems that women are laughing, they are actually scared; this is called "nervous laughter." Young women smiling momentarily has occurred during *monster attacks* in films like The Giant Gila Monster and The Horror of Party Beach.