  The masses of negative parity $(70,1^-)$ bottom nonstrange baryons are
calculated in the relativistic quark model. The relativistic three-quark
equations of the $(70,1^-)$ bottom baryon multiplet are derived in the
framework of the dispersion relation technique. The approximate solutions of
these equations using the method based on the extraction of leading
singularities of the amplitude are obtained. The masses of 21 baryons are
predicted.
