A little quiz asks us to guess what different sounds are, played over a blank screen.
Titles read: "Can you believe your ears? No. 3. All microphones have queer ideas on certain sounds - which don't always "register" as you'd imagine. For instance - guess this sound - ".
Over a blank screen we hear a kind of crunching, chewing sound. Visuals appear to show C/U of a man eating celery. We then hear a sort of tinkling bell sound - this turns out to be C/U of soda being squirted from a syphon! (this cataloguer apparently cannot believe her ears!) Next, we hear a kind of faint brushing noise. Visuals show C/U of a man shaving before a mirror.
Then we hear someone dialling a number on a telephone; visuals show a woman sitting up in bed and doing the same. Lastly, we hear some water being splashed; visuals show a woman washing her hands in a sink.