AN X-RAY DIFFRACTION STUDY OF HEAT-TREATED CHERT AND ITS ARCHAEOLOGICAL IMPLICATIONS

It has been established that on occasion prehistoric man heat-treated siliceous stones in order to improve their flaking qualities. In this work we have examined samples of heat-treated chert by means of X-ray diffraction and have established that, in most cases, heat treatment causes an X-ray diffraction line broadening which can be interpreted as a decrease in range of crystalline order of up to 40%, in the most extreme case. The implications of this to an understanding of the fundamental mechanisms of fracture and as a tool for archaeological studies are discussed.     

Book reviews

Classical Persian Music: An Introduction. By Ella Zonis. Cambridge: Harvard University Press, 1973. xv + 233 pp. $16.50.

Sasanian Remains from Qasr‐i Abu Nasr: Seals, Sealings, and Coins. Edited by Richard N. Frye. Cambridge: Harvard University Press, 1973. 132 pp + 26 pp. of plates. $12.50.

The School Principal. By Jalal Al‐e Ahmad. Translated by John K. Newton, with an introduction and notes by Michael C. Hillmann. Minneapolis, Minn.: Bibliotheca Islamica, 1974. 144 pp. $5.00.     

The origins of the birth control movement in England in the early nineteenth century

The origins of the birth control movement in England in the 19th cen tury are discussed. The impact of Malthus's "Essay on the Principle of Population" and the activities of such thinkers and reformers as Jermy Bentham, James and John Stuart Mill, Francis Plance, Richard Carlile, Robert Dale Owen, and Charles Knowlton are discussed. The social debate that arose during the century is discussed.     

Congress and the Constitution: The Twenty-seventh Amendment and the Past and Future of Constitutional Alteration

The most recent addition to the U.S. Constitution is also one of the first proposed amendments. The 27^th Amendment restricts change to congressional salaries until after the next election. First drafted by James Madison and approved by Congress in 1789, the proposal was among a package of 12 items sent to the states. Ten of those proposed amendments were ratified and became known as the Bill of Rights. The others languished with only occasional attention by constitutional scholars. In the early 1980s, an undergraduate student at the University of Texas wrote a term paper arguing for adoption of the limits on congressional pay raises. After receiving a C grade from his teaching assistant and instructor, the student rejected the opinions of his teachers and independently pursued the adoption of Madison's proposal. Gregory Watson single-handedly mounted a letter-writing and lobbying campaign that caused state legislators to redirect their attention to the proposed amendment. In 1992, following a most unusual ratification process—including certification by the Archivist of the United States—the measure became the 27^th Amendment. In this article, we trace the history of the amendment, demonstrate that its impact has been more symbolic than substantive, and argue that Congress needs to reassert its authority over the amendment process in line with the letter and spirit of Article V. The 27^th Amendment has a peculiar constitutional history, and there are lessons we should learn from that experience.     

Who ate the birds: the taphonomy of Sarakenos Cave,Greece

The taphonomic analysis of avian remains from Sarakenos Cave reveals that, contrary to previous suggestions, many bird bones excavated there represent food remains of the Eagle Owls rather than humans. The conclusion is based on the presence of traces of digestion, beak and claw punctures, and indirect evidence that includes relative preservation of particular elements, species composition, the lack of cut marks, and the absence of numerous traces of burning. Specimens with medullary bone and traces of digestion indicate that the owls killed breeding females in spring. Since it is unlikely that owls shared the cave with humans at the same time, it supports the notion based on archeological evidence that human groups did not inhabit it permanently.