As a three-day beat spell drew to a close last night officials of the Metropolitan District Commission warned the huge crowd of students longing by the Charles that a $20 fine awaited anyone with a penchant for a plunge.

Not that the water's polluted. MDC officials have been sniffing up the river in eyedroppers, and they reported yesterday that the water had never been nicer.

Bath Houses Locked

But, the MDC announced, the water bordering the Houses isn't for bathers. The Commission told not and bothered students that they could take their suits to Magazine Beach, this side of the Cottage Farm Bridge, "but the bath house isn't open yet," or to Revere Beach, "but the bath house isn't open yet."

"Better change in the back of a car or in a bush or something," an MDC man advised yesterday. "Bath houses open June 17."

Despite this inconvenience, both beaches were swarming over the past three days. Sunday bathers at Revere were routed by an evening thunder-showing, but the crowds returned yesterday.

Tank Orgy

At the College, students found other ways to keep cool during the sticky spell. Over 100 Adams residents splashed in the House pool Sunday, while the Indoor Athletic Building tank remained closed.

Dunster House doesn't have a pool, but it does boast running cold water. Sunday evening all studying came to a stop while "D" entry engaged in one of the biggest water fights in recent history.

Key man in the water battle was David I. Coombs '49, who leaned out of his fourth-floor window and cascaded water down on two Dunster men. One were bathing trunks, and the other was well protected by a rain coat and an inverted grocery box.

Coombs Peppered

While a crowd of 150 cheered, one courageous Dunster men crawled out onto the roof, and drowned Coombs. Water bags peppered the audience, and then one man went down for a hose.

A nervous University policeman intervened at this point, enjoined the student from hosing, and lifted his bursar's card as a warning to the mob not to let the antics get out of hand.

Cokoless

Coca-cola machines throughout the College ran dry Sunday and yesterday, but there was a way out. The Harvard Provision Company said that there was busy traffic in Tom Collins mix, and of course, gin.