Description: Segment 1 The intertitles explain that the purpose of this film was to record the movements of the alimentary canal musculature for subsequent analysis. A rabbit is shown eating a cabbage leaf. Diagrams showing the anatomy of the rabbit's digestive system are shown. An anaesthetised rabbit has been cut open and the digestive area is displayed. The movements of the stomach are shown at normal speed and speeded up by three times. The movements of the pylorus are shown. The movements in the duodenum are shown. A peyer's patch of lymphoid tissue in the small intestine is shown. Intussusceptions forming are shown. Time start: 00:00:00:00 Time end: 00:07:29:10 Length: 00:07:29:10 Segment 2 An intussusception forms and pulls out and the subsequent activity is shown. The movements in the terminal part of the ileum are shown. Excessive movements in a different rabbit are shown. Excessive activity of the caecum are shown. Movements of the haustrated colon are shown. Movements of the 'smooth' colon and propulsion of faecal balls are shown. Defaecation is shown. Excessive activity caused by injecting saline into the stomach is shown. The intertitles note that this activity produced copious diarrhoea. Time start: 00:07:29:10 Time end: 00:15:52:17 Length: 00:08:23:07