[E.J. Semmens experimented with Eucalyptus distilling during his time as principal of the VSF, this piece of equipment would have been used for teaching and research at the School and maybe linked to Semmens' research.] Detailed description of item supplied by from the International Wood Collectors Society.Steam distillation box for extraction of essential oils from wood or sawdust and leaves. Copper box and stand, bakelite fittings, cork and glass tubing. The box has a vent for releasing steam pressure and bottom drain hole to collect oils. It is raised to allow a burner to fit underneath it. forestry, forest products, semmens, edwin james