Although, as we have seen, the processes both of detumescence and of contrectation may manifest themselves primarily in childhood as associated conscious sensations, by far the most common event is for the processes of contrectation to appear separately, before those of detumescence. From an inquiry relating to eighty-six heterosexual men, who to the best of my belief were sexually normal, I ascertained that in more than 75 per cent., the feelings of contrectation appeared first, and not until after this had happened was the boy's consciousness attracted by sensations in the genital organs. This appears rather remarkable, inasmuch as we must assume that in the phylogeny of our species the processes of detumescence appeared earlier. Originally, in the earlier ancestral types, reproduction was effected by fission or gemmation (simple division or budding), without any necessity for conjugation with another individual of the species; and reproduction by gemmation corresponds to the processes of detumescence, to the ejaculation of the spermatozoa by the male. But although in most individuals the processes of detumescence make their appearance in consciousness only in a secondary manner, it does not follow that in the actual course of development they are also secondary. They do not, indeed, enter so early the sphere of conscious impulses, but there is a considerable amount of evidence to show that important processes are going on in the external genital organs long before consciousness is directly affected by these processes--consider, for example, the consequences of early castration.