This paper completes a study of Gulliver's Voyage to the Country of the Houyhnhnms as a study of adolescence. Part one, published in an earlier issue of IRPA, argued for a view of Yahoo, Houyhnhnm, and Gulliver as reifications of id, ego ideal, and ego respectively and examined their interaction as a manifestation of the (failed) psychic adjustment to the rise of the repressed in puberty and adolescence. The present paper attempts to enrich the analogic portrait by attending to the largely defensive, social, and cognitive elements of Gulliver's experience in Book IV, all of them again strongly suggestive of a turbulent, even pathogenic adolescence. The focus is on the Houyhnhnms as hypostatizations of adolescent asceticism; on Gulliver's black-and-white thinking; on his ideologically purist political attitudes and the cognitive development they imply; on his cultish group orientation; and on his categorical rejection of 'parental' values in favour of the idealized horses.