The SciencesThe Service of the Chemist, September 1923A Department Devoted to Progress and Achievement in the Field of Applied. ChemistryBy Ismar Ginsberg on September 1, 1923AdvertisementABOUT THE AUTHOR(S)Recent Articles by Ismar GinsbergCharcoal, The Chemical Truant OfficerThe Service of the Chemist, September 1924Pulp and Paper