Author's note. How little Bachofen understood what he had discovered, or rather guessed, is proved by the term "hetaerism," which he applies to this primeval stage. Hetaerism designated among the Greeks an intercourse of men, single or living in monogamy, with unmarried women. It always presupposes the existence of a well defined form of marriage, outside of which this intercourse takes place, and includes the possibility of prostitution. In another sense this word was never used, and I use it in this sense with Morgan. Bachofen's very important discoveries are everywhere mystified in the extreme by his idea that the historical relations of man and wife have their source in the religious conceptions of a certain period, not in the economic conditions of life.

Translator's note. The female of the European cuckoo (cuculus canorus) keeps intercourse with several males in different districts during the same season. Still, this is far from the human polyandry, in which the men and one women all live together in the same place, the men mutually tolerating one another, which male cuckoos do not.

Westermarck, The History of Human Marriage, London, 1891.