Wallace thanks Ewart for sending a copy of his Penycuik Experiments. He considers that Ewart does not emphasise the importance of breeding in telegony tests from pairs of animals of the same colour as well as the same breed. He believes it a shame that he has given so long a list of suggested experiments, as the greater the variety of single experiments, the less their cumulative effect. He gives advice on the procedures he should adopt for the hybridisation of animals, and, tells an anecdotal story to illustrate the theory of 'the influence of mental impressions of the mother on the offspring'.