1. O. W. Greenberg andJ. C. Sandusky:Nuovo Cimento,6 A, 617 (1971), hereafter called GS.
2. Particle Data Group: πN Partial-Wave Amplitudes (Berkeley, 1970). The solutions used here are: Berkeley Paths 1 and 2, CERN EX. and CERN Kirsopp.
3. Particle Data Group:Review of Particle Properties (Berkeley, 1970).
4. P. Coulter, E. S. Ma andG. Shaw:Phys. Rev. Lett.,23, 106 (1969);E. S. Ma andG. Shaw: Irvine preprint (1970).
5. E. L. Berger andG. Fox: paper prepared for presentation at theArgonne Symposium on Polarization (1970).