Drenching rain doused the revelers celebrating Harvard’s 375th anniversary in Tercentenary Theatre and other venues on Oct. 14. But spirits never dampened as alumni, students, faculty, and staff noshed on pretzels dipped in chocolate and ice cream made with liquid nitrogen. Wingtips and flip-flops got stuck in muddy patches, and sopping hair flattened against wet heads. But dry musicians under a protective canopy entertained the festive crowd, and President Drew Faust mandated: “By the authority vested in me, let’s cut and serve the cake.” The party continued well into the evening, in tandem with the memorable rain.