Heavy Nuclei in the Primary Cosmic Radiation at Prince Albert, Canada. II

The investigation of the low-energy primary cosmic radiation has been extended to include the heavier elements of $Z\ge 9$: Sec. 1; the light elements of Li, Be, and B: Sec. 2; and $\alpha$ particles: Sec. 3. The results of a previous paper on carbon, nitrogen, and oxygen have also been confirmed with better statistics. The energy spectra of all these components show a general similarity in shape. A possible deviation of the light-element spectrum from this similarity is discussed. The abundances of various elements in the low-energy region of 200 to 700 Mev per nucleon are essentially the same as observed in the higher energy region.