He heard Agafea Mihalovna talking of how Prohor had forgotten his duty to God, and with the money Levin had given him to buy a horse, had been drinking without stopping, and had beaten his wife till he'd half killed her.

He listened, and read his book, and recalled the whole train of ideas suggested by his reading.

It was Tyndall's _Treatise on Heat_.

He recalled his own criticisms of Tyndall of his complacent satisfaction in the cleverness of his experiments, and for his lack of philosophic insight.