The interaction of both photoelectrons and X-rays with self-assembled monolayers of n-alkanethiols on gold has been measured using synchrotron radiation as the photon source in the energy range 140−1100 eV. The attenuation length of photoelectrons (λ) was found to vary from a minimum of ∼5 Å at an electron kinetic energy (E) of 100 eV up to ∼23 Å at a kinetic energy of 1000 eV and can be described by the expression λ = 0.3E 0.64 in the range 300−1000 eV. Exposure of the self-assembled monolayer to X-rays leads to fission of the C−S bond with a cross section of the order of 10-17 cm2 which diplays no apparent dependence on the incident photon energy.

This is the third and concluding report on the survey and excavations carried out on the site of the Roman Stoa at Sparta in 1988–91, following on from earlier reports in BSA 88 (1993), 219–86 and BSA 89 (1994), 377–432. It presents a catalogue and description of the most significant small finds and fragments of Byzantine wall-paintings recovered, gives a full list of coins found and their identities, and offers a detailed discussion of the environmental programme and its preliminary results. An appendix publishes the results of analysis of concrete samples from the ancient theatre at Sparta, taken during the excavations of 1992–95 (BSA 90 [1995], 435–60).

The subject is the Roman occupation and control of the river Danube between the river Inn and the Black Sea, with a special emphasis on recent research and discoveries. Themes examined include the pattern of recent research and publication in the dozen modern states that now exist in the area; the construction of strategic roads linking the upper and lower Danube basins with the rest of the Roman world; military history and the creation of the military cordon along the river and the civil and military settlements associated with this. Recent research on social, economic, and cultural themes is also reviewed. Detailed accounts of major roads to the Danube and sites along the river are provided in two topographical appendices.

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