proportion of women experiencing intercourse and the proportion of sexually active women who used contraceptives were greater than those found in Britain and America." In an unpublished survey of both university (undergraduate) and non-university (for example, secretarial) students in Cambridge in 1973 we found the proportion of sexually experienced women in both groups (570/) to be close to that of the Australian sample (62%'). On the other hand, Dr Cole's data on the relationship of age to sexual experience (15% having had intercourse by the age of 16 and 95%' by the age of 21) correspond to our non-university group only, for whom the

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