An Original Handwritten Letter Signed by Augustus Voelcker to Levi Leone. Dated 1869. A letter mentioning his own work on geological formations, and Denton’s work on Agricultural Labourers. Augustus Voelcker 1822-1884 was a Royal Agricultural Society of England chemist. Voelcker was known for his methodical and precise analytical practices as applied to agricultural chemistry. Levi Leone, 1821-1888. English jurist and statistician. His chief work, History of British Commerce and of the Economic Progress of the British Nation, 1763-1870, is considered to be a partisan account of British economic development. Size is 180mm x 115mm. Condition is good. Light folding creases.