Cyril P. Callister Cyril P. Callister Cyril Percy Callister (16 February 1893 – 5 October 1949) was an Australian chemist and food technologist who developed the Vegemite yeast spread. The son of a teacher and postmaster, and one of seven children, he attended the Ballarat School of Mines and later won a scholarship to the University of Melbourne. He gained a Bachelor of Science degree in 1914 and a Master of Science degree in 1917. In early 1915, Callister was employed by food manufacturer Lewis & Whitty, but later that year he enlisted in the Australian Imperial Force. After 53 days, however, he
Railways in Melbourne on common sections of tracks. All services become 24 hour from Friday morning to Sunday evening, with at least one departure every hour after 12am. Along with other Australian railways, Melbourne uses the British terminology of "up" and "down", with "up" being defined as toward Flinders Street station in the CBD. The myki smart-card ticketing system is the main ticketing system currently in use across Melbourne, introduced in 2010. Prior to December 2012 Melbourne also used a magnetic strip paper ticket system known as the Metcard, first introduced to the railway network in 1996. On 29 December 2012 Metcard was