"We just love to play those Princeton boys," said Dick Harlow two years ago, fresh from a convincing 26 to 7 conquest over the Tigers in Soldiers Field. The mouse-trap offense worked to perfection this afternoon.

This time Harvard hopes that Loren MacKinney will provide the spark to upset a favored Princeton eleven. He continued to occupy the blocking role while the team put in final practice licks for Saturday's game. Extra points and punting received a lot of attention yesterday, and the session was topped off with some concentrated work on the bags.

Ayres will start in place of Dietz at center, Spreyer gets the call at tailback, and Barnes will fill in for MacKinney at left end, but otherwise the lineup is unchanged. Small offensive slips have been ruinous this fall, and if Harvard suddenly hits on all cylinders Saturday the Tigers are in for a busy afternoon.

Ayres will start in place of Dietz at center, Spreyer gets the call at tailback, and Barnes will fill in for MacKinney at left end, but otherwise the lineup is unchanged. Small offensive slips have been ruinous this fall, and if Harvard suddenly hits on all cylinders Saturday the Tigers are in for a busy afternoon.

A crowd of about 25,000 to 30,000 is expected for the game. The Princeton and Harvard Jayvees will pull up the curtain on the weekend's sports-this afternoon at 2:30 o'clock.