The "Out of the Inkwell" animations fall by and large into two categories although evidently they are not completely distinct - those which explore the relationship between artist and creation and between the "real" world and the drawn and those, like the first part of this film, which are mainly concerned with metamorphoses of one kind or another (in the long tradition of the trick film).
These films are pleasant enough but it is the other kind (Ko-Ko Nuts, Ko-Ko Needles the Boss, Thanksgiving, "Big Chief" Ko-Ko, False Alarm, Invisible Ink) that are, in my view, the cream of the series and the best things the Fleischers ever did.
This film comes somewhere in between but the tendency in the latr films to try and make the live-action settings more elaborate either by suing actors (the mad scientist, the sultan) or by using more elaborate settings (public swimming baths or, here, the train) tend to rather attenuate the atmosphere of tension (even at times menace) that exists in the more intimate studio-settings. The films, again, end up seeming more like trick films. This is however probably the best of the later films of this kind and the ending is very neat.
This is not a De Forest Phonofilm effort. Someone is evidently confusing with Toot Toot Tootsie, a Song Car-Tune the Fleischers produced in the same year.