Small air shower

In this paper, the authors describe their views on the anisotropy of cosmic ray flows known as air shower and local shower and some experimental methods of confirming it. They present some results of the continuous A S observation performed for two years from 1970 to 1972 at Norikura-dake using a meson-meter and give their views on the more large and stable device desired for observing the anisotropy of A S and L S showers. (Shibata, I.)