declamatorily

There is an anecdote of his walking across a public park (I am told Richmond, but more probably it was Wimbledon Common) with his hat in his left hand and his right waving to and fro declamatorily, while the wind blew his hair around his head like a nimbus: so rapt in his ecstasy over the solemn sweep of the Biblical music that he did not observe a small following consisting of several eager children, expectant of thrilling stump-oratory.

Life of Robert Browning Sharp, William, 1855-1905 1897

There is an anecdote of his walking across a public park (I am told Richmond, but more probably it was Wimbledon Common) with his hat in his left hand and his right waving to and fro declamatorily, while the wind blew his hair around his head like a nimbus: so rapt in his ecstasy over the solemn sweep of the Biblical music that he did not observe a small following consisting of several eager children, expectant of thrilling stump-oratory.

Life of Robert Browning William Sharp 1880