Dr. Victor S. Clark, of the United States Department of Labor, will speak in the Fogg Lecture Room this evening at 8 o'clock on "The Tariff Policy of Australia." The recently formed Australian commonwealth has adopted a protective tariff which contains some very unusual features, more especially some which are designed to ensure to laborers substantial benefit from the higher prices which the protected capitalists get. Dr. Clark was engaged from 1902 to 1906 in investigating economic and social conditions in Australia, as an agent of the Labor Department, and is an authority on economics in that country. His investigations are noted in his book, recently published, "The Labor Movement in Australasia." The lecture will be open to the public.