Description of the experimental smelting of tin based on ancient technologies from the west of England. Two furnace types were simulated: the bowl furnace as used in the 16th century and the blowing type, from the 18th century. The smelting procedures are described with data from the analysis of raw materials and products. Diagrams, tables, photographs, references. (note: part 7 appeared in vol. 19 1985, n.2, p.153-161).