1. A DRY POWDER ADHESIVE COMPOSITION ADAPTED TO BE ADMIXED WITH WATER TO PROVIDE AN AQUEOUS ADHESIVE SOLUTION, SAID DRY COMPOSITION CONSISTING ESSENTIALLY OF THE FOLLOWING CONSTITUENTS BY WEIGHT, 5% OF A PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF GLYCERINE AND SORBITOL, 50% OF WASTE SULFITE LIQUOR SOLIDS WHICH SOLIDS CONSTITUTE 90% TO 95% OF SAID WASTE SULFITE LIQUOR, 5% TO 10% OF DEXTRAN, SAID DEXTRAN BEING OF THE LUECONOSTOC MESENTEROLDES STRAIN AND DESIGNATED NRRL B-512 AND HAVING 86% TO 97% OF THE GLUCOSIDIC LINKAGES IN THE 1,6 POSITION AND HAVING A MOLECULAR WEIGHT BETWEEN 20,000 AND THAT OF NATIVE UNHYDROLYZED DEXTRAN, SAID COMPOSITION PROVIDING A WATER RESISTANT TOUGH ADHESIVE.