 Complete the following phrase:  Following a visit to London 18591860 Fric opened his natural history business in Prague in 1862, supplying botanical, zoological and mineral specimens to museums, educational institutions and private collectors worldwide. He exhibited at trade fairs: the Volksfest in Linz 1863, silver medal, Paris World Fair 1867, bronze medal, Moscow Polytechnic Exhibition 1872, silver medal, Vienna World Fair 1873, honorary medal, again at the Paris World Fair 1878 bronze medal, Australian International Exhibition in Sydney 1879, medal, and yet again at the 