The following Technical Reports were issued under this grant: Initial Stresses and Skin Effects in a Hemitropic Cosserat Continuum, February 1966 (AD No. 478019); A Note on Singularities in a Cosserat Continuum, February 1966 (AD No. 478020; Strain Gradient Effects in Microlayers, February 1966 (AD No. 478025); Stress Concentration Around Spherical Cavities in Strain-Gradient Dependent Elastic Bodies Subjected to Uniaxial Tension, July 1966; Theoretical Analysis of a Compound Thin-Walled Cylindrical Pressure Vessel Constructed by a Modifed Shrink-Fit Process; Experimental Investigations on Compound Thin-Walled Pressure Vessels; Analysis of Compound Thin-Walled Cylindrical Pressure Vessel for Materials with Directional Properties; and Second-Gradient Effects Around Spherical Cavities Which Was in Progress.