GUTENBERG'S INKS AND PAPERS: NON-DESTRUCTIVE COMPOSITIONAL ANALYSES BY PROTON MILLIPROBE

Particle induced X-ray emission (PIXE) has been used in analysis of ink and paper of the 42-line Bible and other early printed works. Results are reported and their significance discussed.     

The regional consequences of a dualistic industrial structure: the case of Australia

This article is a preliminary attempt to consider the spatial consequences of business organisation segmentation in the Australian economy. The first section outlines a framework that can be employed in an analysis of business organisation segmentation. The second section applies this framework in the context of the Australian economy. This section is in three parts. First, it is shown that conventional sectoral data can be used to approximate business organisation segmentation. Second, the labour market consequences of this empirical exercise are documented. Finally, the spatial consequences of the exercise are shown by way of a series of maps.     

ALPHA-RECOIL TRACKS IN ARCHAEOLOGICAL CERAMIC DATING

Among the manifestations of radioactive decay which can be etched to optical visibility on the surface of mica are tracks from nuclei recoiling from alpha emission, called ‘alpha-recoil tracks’. If, beforeetching, the mica is heated to temperatures of the order of 600°C, all evidence of these tracks is annealed from muscovite mica in a few minutes. Alpha activity observed on mica from pot sherds, from stones surrounding fire places, from fire pits, and fired daub may constitute an alpha-recoil track clock which started at the moment of the last firing of the artifacts.     

MAYAN OBSIDIAN: SOURCE CORRELATION FOR SOUTHERN BELIZE ARTIFACTS

High-precision neutron activation measurements have been made on mesoamerican obsidian from Ixtepeque and El Chayal which are thought to be the major sources of volcanic glass artifacts in pre-Columbian times. These results are compared with measurements on obsidian artifacts from Lubaantun, Wild Cane Cay, Frenchman's Cay and Moho Cay.