What is this this thing called?

Question

It's a bowl shape on a stick and it's got lots of little slits in it. If you put a sequence of pictures inside it and spin it round and look through the slits,the pictures appear to move. It's like a contraption from early cinematography.

What's it called?

Answer 1

ita a zoetrope what exactly did the butler see

Answer 2

Zoetrope.