CHN, QCD, AND (SA)OVER-BAR(4,R)

''CHN'' (1966) was all algebraic algorithm which reproduced and extend ed the predictions of the ''non-interacting'' quark model in the asymp totic high-energy region. It was formulated within the conceptual fram ework of on-mass-shell physics and of the complex angular-momentum pla ne. Prior to the advent of the standard model, it was reinterpreted in terms of the Melosh transformation relating ''current'' to ''constitu ent'' quarks. It is now tied up to the QCD paradigm.