Cirkus v cirkuse

Alternate title: Circus in the Circus. To Moscow have arrived the participants of the international conference of the zoophilologists and also the international jury which is to elect for the world festival the best performance of the program of Moscow circus. Mrs. Whistler (Iva Janzurová British associate professor, makes her understood with the animals in their language but the Czech professor Ruzicka (Jirí Sovák), though he is capable of using the animals language, prefers teaching the animals the human language. Ruzicka's friend, the poodle Archibald, speaks "in Human" very well. The scientific dispute ends with a bet - if Ruzicka teaches the circus elephant to sing, Mrs Whistler will eat up her hat.

At 1:36:49, one man is doing a trampoline act, while 4 jugglers pass 12 clubs across the trampoline in a box pattern.

The entire movie may be seen here.