Secretin
Secretin was the first hormone to be identified. In 1902, William Bayliss and Ernest Starling were studying how the nervous system controls the process of digestion. It was known that the pancreas secreted digestive juices in response to the passage of food (chyme) through the pyloric sphincter into the duodenum. They discovered (by cutting all the nerves to the pancreas in their experimental animals) that this process was not, in fact, governed by the nervous system. They determined that a substance secreted by the intestinal lining stimulates the pancreas after being transported via the bloodstream. They named this intestinal secretion "secretin". Secretin was the first such "chemical messenger" identified. This type of substance is now called a hormone, a term coined by Bayliss in 1905.
Florey Institute of Neuroscience and Mental Health
The Institute was formally established in 1971 by the Victorian Government and named in honour of Howard Florey, an Australian Laureate of the 1945 Nobel Prize in Medicine who helped to isolate the active principle of penicillin and developed the first manufacturing process for the antibiotic. The Institute conducted research into physiological control of body fluid and electrolyte balance, especially the regulation of the adrenal salt-retaining hormone, aldosterone; micro measurement of hormones; hybridization histochemistry; instincts that control ingestion; and the Relaxin hormone.