Weathering evidence for an additional glacial stage in Tasmania

Quantitative studies of relative dating parameters, including subsurface dolerite weathering rind thickness and weathering front penetration, permit the differentiation of three broad groupings of till deposits in several valleys in north-central, western, western-central and south-western Tasmania. An early cold climatic phase–the Linda Glacial Stage–is recognised on the basis of this weathering evidence which also indicates that there have been at least two more recent Glacial Stages of decreasing severity, termed here the Henty and Margaret Glacial Stages respectively. This three-fold model bears a striking similarity to that of Lewis (1945) which was rejected nearly three decades ago. However, whereas Lewis' model was founded upon erosional evidence, the present study is based entirely upon depositional and weathering evidence.     

THE AMERICAN BAR ASSOCIATION, ANTITRUST LEGISLATION AND INTEREST GROUP COALITIONS

This article examines the testimonial behavior of the American Bar Association with respect to congressional hearings conducted to consider proposed changes in the antitrust laws during the 1970s. The ABA displayed a pattern of agreement in opposition to the proposed antitrust legislation with recurrently appearing business interest groups, and the Nixon and Ford Justice Departments. ABA testimony proved inconsistent with the views expressed by the Federal Trade Commission and a consumer lobby, the Consumer Union. Variable intergroup interaction levels, and data on the vested interests of ABA leaders are suggested as possessing explanatory power.