We present selected results on strong interaction physics from the SLD
experiment at the SLAC Linear Collider. We report on several new studies of 3-
and 4-jet hadronic Z decays, in which jets are identified as quark, antiquark
or gluon. The 3-jet Z^0->b\bar{b}g rate is sensitive to the b-quark mass;
prospects for measuring m_b are discussed. The gluon energy spectrum is
measured over the full kinematic range, providing an improved test of QCD and
limits on anomalous bbg couplings. The parity violation in Z^0->b\bar{b}g
decays is consistent with electroweak theory plus QCD. New tests of T- and
CP-conservation at the bbg vertex are performed. A new measurement of the rate
of gluon splitting into b\bar{b} pairs yields
g_{b\bar{b}}=0.0031+-0.0007(stat.)+-0.0006(syst.) (Preliminary). We also
present a number of new results on jet fragmentation into identified hadrons.
The B hadron energy spectrum is measured over the full kinematic range using a
new, inclusive technique, allowing stringent tests of predictions for its shape
and a precise measurement of =0.714+-0.005(stat.)+-0.007(syst.)
(Preliminary). A detailed study of correlations in rapidity y between pairs of
identified pions, kaons and protons confirms that strangeness and baryon number
are conserved locally, and shows local charge conservation between meson-baryon
and strange-nonstrange pairs. Flavor-dependent long-range correlations are
observed for all combinations of these hadron species, yielding new information
on leading particle production. The first study of correlations using
rapidities signed such that y>0 corresponds to the quark direction provides
additional new insights into fragmentation, including the first direct
observation of baryon number ordering along the q\bar{q} axis.Comment: 20 pages, 12 figs.; talk given at the QCD99 meeting, Montpellier,
France, 7-13 July, 1999; a smaller-print version will appear in the
proceeding
