Laughing Gas (1914 film) squabbling. The dentist arrives, and his first patient goes in, obviously in pain. The dentist prepares the nitrous oxide anaesthesic (also known commonly as "laughing gas" due to its effects prior to and after unconsciousness). With the man unconscious he pulls his tooth, but then he can't get him to wake up. He calls for Charlie and when he arrives the dentist runs off. Charlie tries to wake him and eventually tries hitting his head with a mallet. The man revives but starts laughing. Charlie knocks him out with the mallet. The dentist then returns and Charlie is sent to
Laughing kookaburra the early years of the 20th century "kookaburra" was included as an alternative name in ornithological publications but it was not until 1926 in the second edition of the "Official Checklist of Birds of Australia" that the Royal Australasian Ornithologists Union officially adopted the name "laughing kookaburra". The name comes from Wiradhuri, an Aboriginal language now effectively extinct. The genus "Dacelo" contains four kookaburra species of which the rufous-bellied kookaburra and the spangled kookaburra are restricted to New Guinea and islands in the Torres Straits. The blue-winged kookaburra and the laughing kookaburra are both widespread in Australia. Two subspecies are