  A sender seeks to persuade a receiver by presenting evidence obtained through
a sequence of private experiments. The sender has complete flexibility in his
choice of experiments, contingent on the private experimentation history. The
sender can disclose each experiment outcome credibly, but cannot prove whether
he has disclosed everything. By requiring `continuous disclosure', I first show
that the private sequential experimentation problem can be reformulated into a
static one, in which the sender chooses a single signal to learn about the
state. Using this observation, I derive necessary conditions for a signal to be
chosen in equilibrium, and then identify the set of beliefs induced by such
signals. Finally, I characterize sender-optimal signals from the
concavification of his value function constrained to this set.
