Harvard students know one-third more about sex than do their Columbia brethren.

At any rate an unofficial poll of selected students at Radcliffe, Wellesley and Barnard, conducted recently by a certain advertising agency in connection with the promotion of a book, "The Sex Life of the Unmarried Adult," revealed the embarassing detail of comparative sex knowledge at Harvard and Columbia.

Using the results of the poll as a basis the agency placed a three column ad in The Columbia Spectator and only a two column ad in the CRIMSON.

"You see," an anonymous representative of the advertising agency explained, "the poll clearly indicated to us that lesser sex knowledge at Columbia necessitated more advertising on Morningside Heights than in Cambridge, Massachusetts.'

Oh, yes, the unofficial poll . . . . "Well," the advertising man said, "that gave us a little trouble at first. First we had to determine which of the women's colleges to include in our questionnaire. And it is only natural that Barnard girls would know more about Columbia College men than would, let's say, Smith students. Radcliffe and Wellesley were chosen pretty much on the same basis for the Harvard end of the poll.

And the ones to be polled, how were they selected?

"Maybe we'd better not go into that," the anonymous one said, nervously drumming his fingers on the desk.

And what were the questions asked, and just how were they worded?

The gentleman with the shadowy cloak of anonymity began to hem and haw.

"Well, you see, er, er, the questions were, well, er, er, . . . well, the questions were pretty frank. That is," he added with a smile, "inoffensive frankness. Absolutely inoffensive.

"Well, anyway," the evasive one continued, "the results of the poll clearly revealed that in the estimation of the girls of Barnard the boys of Columbia have a sex knowledge rating of only 44 per cent. And the young women up at Radcliffe and Wellesley thought that the boys at Harvard were entitled to a 66 per cent rating. And that's the reason we had a three-column ad in The Spectator and only a two-column ad in the Harvard CRIMSON. Columbia Spectator.