Although University Police reported no increase in thefts during the first week of Summer Session, students are being urged to keep their doors locked and to use Travelers' Checks in place of cash.

Capt. George Walsh yesterday stressed the importance of observing what he termed appropriate precautions and noted that approximately half of the $250,000 to $360,000 handed to tellers in Memorial Hall last week was in cash. Students were exposing themselves to considerable risk, he said, by keeping as much as $1000 in cash with them or in their rooms for most of the week.

Laxity

Summer School students are particularly lax, a member of the student security guard said yesterday. He noted that those from less urban environments are probably less likely to take security precautions, and he suggested that "they're not locking doors as much as they should."

"Gullibility," even during the rest of the school year, also contributes to theft, Walsh said. In some cases students have let "street people" sleep in their rooms only to discover their valuables and guests gone in the morning, he added.