  For an algebraic (n-1)-cycle Z on a complex projective (2n-1)-manifold X, P.
Griffiths conjectured that, if Z is algebraically equivalent to zero and if the
incidence divisor of Z on every family of (n-1)-cycles is principal, then the
Abel-Jacobi image of Z in the intermediate Jacobian J(X) of X is a point of
finite order. Using a recent generalization of the classical height pairing, we
give a proof of a stronger statement, namely that the Abel-Jacobi image of Z is
zero.
