White Watson F.L.S. 1760-1835, is regarded as a pioneer in the study of Derbyshire stratigraphy. His skill in stone, mineral and palaeontological samples was revealed in the sectional maps produced in accurate imitaiton of the local geological landscape. Mineral seams would be illustrated with related mineral samples, galena to show lead veins, sandstone for gritstone and so on. Watson created his first "section" in 1785, this was called A Section of a Mountain in Derbyshire. His most important work however was A section of Strata of Derbyshire, (see lot 89) which covered a section between Buxton in the West and Bolsover in the East; this was first designed in 1807 using details from geologist John Farey. It appears that only 21 sections are presently listed and these examples are very important representatives of the genre.