This simple and amusing feature is one of the lighter Georges Méliès movies, but it shows his creative touch with a simple subject. It's pleasant to watch, and it features several of his renowned visual effects along the way.
The premise has a ballet master who can't take his mind off of his work, even when it is time to go to sleep, so naturally his state of mind affects his dreams. It is set up efficiently and in such a way that it is easy to relate to. Regardless of one's occupation or how we spend our days, who hasn't had the experience of going to bed while unable to shake off the worries and events of the day? His state of mind makes the feature amusing yet rather thoughtful.
The camera effects in the dream sequence are not as elaborate as those in many other Méliès features, but most of them work well, and though mostly simple, they are enjoyable. The overall effect is of a light, entertaining trifle by a genius who was taking a bit of a respite from his more rigorous efforts.