Sclater answers Ewart's question about experiments in inbreeding in the Zoological Gardens. He states that, while that no experiments specifically based on inbreeding have been carried out at the Gardens, they are careful to inject new blood into their breeding programmes, to sustain the size, health and reproductive powers of the animals.

Sclater answers Ewart's question about breeding between brothers and sisters of the same breed of animal, stating they tend not to continue breeding well after a few years. He suggests that any breeding experiments would be better conducted in a quieter place than the Zoological Gardens.