ing to secondaries with vic> 0.7, while the denominator is obtained from the NAL-ISR compilation of L.W. Jones et al. Nuovo Cimento Letters §., 13 (1973). In comparing \-lith the cosmic­ ray data the latter's formula for was used to extrapolatench (see Ref. 3). 5

Proceedings of 11th International Conference Cosmic Rays, Budapest, 1969. There is also a bit of emulsion data on R at cosmic ray energies E. Lohrmann see Ref. 3. c 6. University of vlashington, preprlnt (1973). 7. For a summary of interpretations of the data, see Ref. 3. 8 S.N. Ganguli and P.K. Malhotra and tLW. Teucher, Nuovo Cimento £, 957 (1962). 9 G. Occhialini and A. M. Vincent private communication. 10. G. Meulemans~· M. Danysz and G. Yekutieli Nuevo Cimento ~, 341 (1951) 11 Y. Goldschmidt-Clermont Phil. Hag. (7},~, 1185 (1951). 12. We are indebted to Dr G. Kellner Dr E. Quercighand Dr for discussions on this point. Addendum to Proposal: MULTIPARTICLE PRODUCTION IN NUCLEI BY PROTONS OF SEVERAL HUNDRED GeV