**LECTURES ON ANCIENT LAW. V. "Religious Authority." Professor Vinogradoff. North Room Austin Hall, 8 P. M.
Friday, April 26.
*ZOOLOGICAL CLUB. "A Case of Reversion Produced by Cross-Breeding, and its Fixation." Professor Castle.--Short Papers. Zoological Laboratories, Fourth Floor, M. Z., Room 4, 4.45 P. M.
**DIVINITY SCHOOL. Devotional Service with Sermon. Mr. Edwin M. Slocombe. Divinity Chapel, 7.30 P. M.
**LECTURES ON MUNICIPAL OWNERSHIP. II. "English Municipal Statistics. The Probability of Profit-Making by Municipal Ownership. Municipal Management." Major Leonard Darwin. Emerson Hall Lecture Room (first floor), 8 P. M.
Saturday, April 27.
**LECTURE. "The Growth of Children." Dr. William T. Porter. Harvard Medical School, Longwood Ave., Boston, 8 P. M.