Originally modelled on the Dublin Society for improving Husbandry, Manufacturers and other Useful Arts, the RSA, from its foundation, offered "prizes" through a Premium Award Scheme that continued for 100 years. Medals and, in some cases, money were awarded to individuals who achieved success in published challenges within the categories of Agriculture, Polite Arts, Manufacture, Colonies and Trade, Chemistry and Mechanics. Successful submission included agricultural improvements in the cultivation of crops and reforestation, devising new forms of machinery, including an extendable ladder to aid firefighting that has remained in use relatively unchanged, and artistic skill, through submissions by young students, many of whom developed into famous artists e.g. Edwin Landseer who at the age of 10 was awarded a silver medal for his drawing of a dog.