Your Artstor image groups were copied to Workspace. The Artstor website will be retired on Aug 1st. Journal of Urban and Environmental Engin... Journal of Urban and Environmental Engineering Vol. 10, ...

M. Mene, a French chemist, has just discovered that hydrate of alumina, prepared by decomposing alum with carbonate of soda, is a perfect substitute for animal charcoal in the decolorizing of liquids.