Responds to CD’s comments on his review of the Origin. Regrets lack of space often causes him to do injustice to CD and to himself. Agrees to alter some of his statements

and offers some evidence for his opinions on plant hybridising.

Sends references to papers mentioning cave insects. Paussi are not blind, as CD thinks, though some other insects that live in ants’ nests are. Each country over the world has its peculiar species of Paussi, though they all live in ants’ nests. "Physical condition I say – Natural Selection you say".