What did William Smith Benjamin Richardson and Joseph Townsend create?

William Smith, Benjamin Richardson, and Joseph Townsend were involved in the development of the "Smith & Townsend" method of scientific classification of soil types in the 19th century. They contributed to advancements in soil science and agricultural practices by categorizing soils based on their properties and suitability for various crops. Their work laid the groundwork for modern soil classification systems and improved agricultural productivity.