Jerry sets Tom's left foot on fire, but Tom puts his right foot into the fishbowl to dowse the flame.
Jerry dives head-first into the bottle of invisible ink to hide from Tom. When he emerges from the bottle, it is the bottom half of his body that is invisible, first. Additionally, when the invisible ink splashes onto the table top, there are no invisible spots where the ink landed.
After Jerry stops bothering Tom continuously, Tom hears munches while Jerry is eating a banana, Tom discovers Jerry's shadow, while Jerry is still invisible.
Jerry's footprints first become visible under the refrigerator where there is no flour to create the footprints.