404.    BUGGE, P. E., AND KERLOGUE, R. H.  Determination of the Surface Area of Powders by Means of Low-Temperature Adsorption Isotherms.  Jour. Soc. Chem. Ind., vol. 66, 1947, pp. 377-381.

                  Simple routine procedure for the determination of the surface area of powders by means of low-temperature adsorption isotherms is described with full experimental and mathematical detail.  Method of interpretation has been formulated permitting the elimination of the “deadspace” determination for routine procedure where the substance is known to give an S-shaped isotherm.  Apparatus and the method are based on previous work of Brunauer and Emmett.

                  BULANOVA, T. F.  See abs. 1705.