The proton spectrum for particles in the momentum band 0.4 to 1.0 Bevc and the meson spectrum for particles in e momentum band 0.09 to 0.34 Bevc were obtained at an elevation of 3.3 km and at magnetic lat. 48 deg. N. The measurements were made at zenith angles of vertical, 45 deg. E and 45 deg. W. The zenith angle dependence of protons is presented as a new datum on the nucleonic cascade. Experiment showed that the gross zenith angle dependence will fit a cos to the power of 3.2 phi distribution at 45 deg. E or W. It is assumed that a undirectional component of the primary radiation will 1 suffer exponential absorption along is original path with a path length for removal of 120 gsq cm of air and 2 acquire an ultimate distribution resulting from scattering at 3.3 km which fits a cos to the power of n omega distribution gave satisfactory agreement with n6.5, which indicated that the average projected scattering anglecollision is about 5 deg.